Siedman(Xiamen)HydraulicTechnologyCo.Ltd.

Xiamen, China

A2FO Hydraulic pumps is robust pump with long service life used in manufacturing and technology applications such as railway engineering, chemical process plants, power and environmental engineering, automotive engineering, plastics processing machinery, paper industry, presses, test rigs and simulation systems, marineoffshore engineering, special projects, and civilwater engineering, transportation technology, and machine tools Product description : All-purpose high pressure pumpSize 5 - 1000Nominal pressure up to 400 barMaximum pressure up 450 barOpen circuit. Feature : Robust pump with long service life Very high total efficiency High power density Large variety of available nominal sizes allows exact adjustment to the application Optional with long-life bearings for the nominal sizes 250 to 1000 Bent-axis design About Us : Siedman (Xiamen) Hydraulic Technology Co;Ltd is an professional supplier of hydraulic products , we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price .Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators. After many years of development , we have established several agents home and abroad , offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation , renewable.

The check valve type S enables preferably leak-free blocking of a flow in one direction and free flow in the opposite direction.It basically consists of housing , poppet  and compression spring .The stroke of the poppet  at the external diameter is limited by a stop. The integrated compression spring supports the closing movement. Additionally, the compression spring  also retains the poppet  in closed position when no fluid flows through the valve. Product description: Size 6 - 30Component series 1XMaximum operating pressure 450 barMaximum flow 450 lmin Feature : For threaded connection (screw-in thread)Leakage-free blocking in one directionVarious cracking pressures, optional About us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations.

Based on international and domestic industrial standards and customer requirements, we set up higher internal quality assurance standards to implement comprehensive and full quality management.  product description: size 6 - 30component series 1xmaximum operating pressure 315 barmaximum flow 400 lmin feature : for installation in block designs• as angle valve• as straight-through valveleakage-free blocking in one directionvarious cracking pressures, optiona about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements. We deliver top quality product in time and achieve customer satisfaction through continual quality and process improvement.

In direction , there is a free flow; in the opposite direction, the flow is blocked.If, for example, there is a flow through the valve , the control spool  is moved in the direction of the B side, opens the ball seat valve and then pushes the poppet off its seat. Hydraulic fluid can now flow .In order to allow the ball seat valve to be safely closed, the control spool must be hydraulically unloaded.Due to the pre-opening, there is a damped decompression of the pressurized liquid. Thus, possible switching shocks are avoided. Product description: Size 6Component series 6XMaximum operating pressure 315 barMaximum flow 60 lmin Feature : Sandwich plate valve for use in vertical stackingsPorting pattern according to DIN 24340 form A (without locating hole)Porting pattern according to ISO 4401-03-02-0-05 and NFPA T3.5.1 R2-2002 D03 (with fixation)For the leakage-free blocking of one or two actuator ports, optionalVarious cracking pressures, optional (see ordering codes)With pre-opening, optionalCheck valve installation sets available individuallySpecial versions on request About us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil

The two-stage set-up with an increased control open ratio means even low pilot pressure can be unloaded securely.Avoidance of switching shocks due to dampened decompression of the pressure volume on the actuator side. Product description : Size 25Component series 5XMaximum operating pressure 315 barMaximum flow 450 lmin Feature : Sandwich plate valve for use in vertical stackingsPorting pattern according to ISO 4401-08-08-0-05 and NFPA T3.5.1 R2-2002 D08For the leakage-free blocking of one or two actuator ports, optionalVarious cracking pressuresPre-opening standardCheck valve installation sets available individuallySpecial versions on request About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements.

the force of the solenoid acts via the plunger on the control spool and pushes the latter from its rest position to the required end position.after de-excitation of the solenoid , the return spring  pushes the control spool back to its rest position.an optional manual override  allows control spool to be moved without solenoid energization. product description : size 6component series 6xmaximum operating pressure 350 barmaximum flow 70 lminfor potentially explosive areas (ii 2g). feature : 43-, 42- or 32-way versionfor intended use in potentially explosive atmospher- area of application in accordance with the explosion protection directive 201434eu: ii 2g- type of protection of the valve solenoids: ex eb mb iic t4 gb according to en 60079-7 en 60079-18wet-pin dc or ac solenoidselectrical connection with individual connection and cable glandwith manual override, optional about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. we provide good quality, best service and reasonable price. our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution.

To ensure proper functioning, make sure that the pressure chamber of the solenoid is filled with oil!The force of the solenoid acts via the plunger on the control spool and pushes the latter from its rest position to the required end position. In this way, the required direction of flow according to the symbol is released. After de-excitation of the solenoid , the return spring pushes the control spool back to its rest position. Product description : Size 6Component series 7XMaximum operating pressure 315 barMaximum flow 60 lmin Feature : 43-, 42- or 32-way versionStandard versionWet-pin DC solenoidsSolenoid coil can be rotatedThe coil can be changed without having to open the pressure-tight chamberElectrical connection as individual connectionConcealed manual override About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc.

Pressure valve type dbw is a pilot-operated pressure relief valve. It is used for limiting the operating pressure.the pressure relief valves (dbw) basically consist of the main valve with main spool insert and pilot control valve with pressure adjustment element.pressure relief valve type dbwthe function of this valve is basically the same as that of valve type db. The unloading of the main spool is, however, achieved by controlling the mounted directional spool valve . Product description : size 10 - 32component series 5xmaximum operating pressure 350 barmaximum flow 650 lmin feature : for threaded connectionfor installation in block designs4 adjustment types for pressure adjustment, optionally • rotary knob• sleeve with hexagon and protective cap• lockable rotary knob with scale• rotary knob with scale5 pressure ratingssolenoid-operated unloading via built-on directional spool valve or directional poppet valvehigh-power solenoidexplosion-protected solenoid (upon request)switching shock damping, optional about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.

Pressure valves of type ZDB and Z2DB are pilot-operated pressure relief valves in sandwich plate design.They are used for limiting a system pressure.The valves basically consist of the housing and one or two pressure valve cartridges.The system pressure can be set via the adjustment type . Product description : Size 6Component series 4XMaximum operating pressure 315 barMaximum flow 60 lmin Feature : Sandwich plate valvelocating hole)4 pressure ratings5 circuit optionsWith 1 or 2 pressure valve cartridges4 adjustment types for pressure adjustment, optionally • Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scaleCorrosion-protected design About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations

The valve type dz is a pilot-operated pressure sequence valve.it is applied for pressure-dependent connection of a second system.the pressure sequence valve basically consists of main valve  with main spool insert  and pilot control valve  with adjustment type and optional check valve . Product description : size 10 - 32component series 5xmaximum operating pressure 315 barmaximum flow 600 lmin feature : suitable for use as preload, sequencing and changeover valvefor subplate mountingas cartridge valve4 pressure ratings4 adjustment types :• rotary knob• sleeve with hexagon and protective cap• lockable rotary knob with scale• rotary knob with scale check valve, optional about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations

Pressure valves of type ZDR 10 V are pilot-operated pressure reducing valves in sandwich plate design. They are used for reducing a system pressure. The pressure valves basically consist of pilot control valve and housing. The secondary pressure is set via the adjustment type .In initial position, the valves are open. Hydraulic fluid can flow without restrictions. The pressure  acts simultaneously at the main spool , via the bore at the spring-loaded inside of the main spool and via the nozzle on the pilot poppet.   Product description : Size 10Component series 3XMaximum operating pressure 315 barMaximum flow 100 lmin Feature : Sandwich plate valve4 pressure ratings4 optional adjustment types:• Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale Check valve, optional (versions "A" and "B")Pressure gauge connection About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced.

The valve type dr 6 dp is a direct operated pressure reducing valve in 3-way version, i. E. With pressure limitation of the secondary circuit. it is used to limit a system pressure. The secondary pressure is set via the adjustment type.the valve is open in initial position. Hydraulic fluid can flow from channel p to channel a without restrictions. The pressure in channel a is simultaneously applied via the control line at the piston area opposite the compression spring . If the pressure in channel a exceeds the value set at the compression spring , the control spool moves to control position and keeps the set pressure in channel a at a constant level.   product description : size 6component series 5xmaximum operating pressure 315 barmaximum flow 60 lmin feature : for subplate mounting4 optional adjustment types:• rotary knob• threaded pin with hexagon and protective cap• lockable rotary knob with scale• rotary knob with scale 5 pressure ratingscheck valve, optional about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development.

Command value-dependent setting of the pressure to be reduced in channel via the proportional solenoid . in the depressurized port , the spring  holds the main control spool  in the initial position. thus, opening the connection from p1 to t and blocking of the connection from p to p1. pressure connection from port p to the ring channel . pilot oil flows from the bore  to port t, via the flow controller , the nozzle  to the pilot control valve , the throttle gap  to the longitudinal groove  and the bores .  product description: size 6component series 1xmax. Operating pressure 315 barflow, max. 30 lminfeature : operation by means of a proportional solenoidtype zdree with integrated electronics (obe) about us: siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service.

PGH-type hydraulic pumps are gap-compensated internal gear pumps with fixed displacement. The hydrodynamically mounted pinion shaft drives the internal gear. The pinion shaft and internal gear tooth clearances opening in the suction range suck in the hydraulic fluid and transport it to the pressure range. The suction and pressure range are separated by the radial compensation elements and the tooth engagement between the internal gear and pinion shaft. Production description : Frame size 2, 3Size 5 - 16Component series 2XMaximum operating pressure 350 barMaximum displacement 16 cm³ Feature : Fixed displacementLow operating noiseLow flow pulsationHigh efficiency also at low speed and viscosity due to sealing gap compensationSuitable for broad viscosity and speed rangesAll frame sizes and sizes can be arbitrarily combinedCan be combined with internal gear pumps, radial piston pumps and external gear pumps About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic.

The valve type z1s is a direct operated check valve in sandwich plate design.it is used for the leakage-free blocking in one direction and allows for free flow in the opposite direction.the stroke of the poppet is limited by the plastic socket. The installed spring supports the closing movement. When no fluid flows through the valve, the spring keeps the poppet in closed position.in contrast to the straight-through valve , the angle valve links or closes off up to three internal channels. Stop and sealing function are taken over by the plug screw . Product description : size 6component series 4xmaximum operating pressure 350 barmaximum flow 40 lmin feature : sandwich plate valve for use in vertical stackings● as angle valve● as straight-through valveporting pattern according to iso 4401-03-02-0-05 and nfpa t3.5.1 r2-2002 d03various one and two-channel blocking functionsperfect leak-tightness due to poppet made of high-performance plasticcorrosion-resistant surface on requesteasily adjustable to special hydraulic fluids by exchanging the external seal ringswith measuring ports, optionalas throttle check valve on request about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power.

Valves type sl are pilot operated check valve in seat design that can be opened in blocking direction.possible applications of these valves include blocking pressurized working circuits, preventing a load reduction in case of a line break or safeguarding against creep movements of hydraulically locked actuators.the valves basically consist of a housing , a seat poppet, a compression spring , a control spool as well as of a pre-opening as ball seat valve , which is optional.for safe opening of the valve via the control spool , a defined minimum pilot pressure is required. Product description : size 10 - 32component series 4xmaximum operating pressure 315 barmaximum flow 550 lmin feature : for subplate mountingporting pattern according to iso 5781subplates according to data sheet 45062 (separate order)for threaded connectionpilot oil return, internalwith or without pre-opening, optionalversion with pre-opening for dampened release (reduction of potential switching shocks)4 cracking pressures, optional about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development.

A sufficiently high pilot pressure at port X moves the control spool in the direction of the seat valve and pushes the seat poppet out of its seat. This allows for a free flow in both directions .In order to ensure that the seat valve actively opens, the pressure ratios on both sides of the control spool are just as important as the area ratios at the seat poppet . Product description : Size 25Component series 5XMaximum operating pressure 315 barMaximum flow 450 lmin Feature : Sandwich plate valve for use in vertical stackingsPorting pattern according to ISO 4401-08-08-0-05 and NFPA T3.5.1 R2-2002 D08For the leakage-free blocking of one or two actuator ports, optionalVarious cracking pressuresPre-opening standardCheck valve installation sets available individuallySpecial versions on request About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc.

The initial position of the valve (normally open "UK" or normally closed "CK") is determined by the arrangement of the spring. The chamber behind the closing element is connected to port P and sealed against port T. Thus, the valve is pressure-compensated in relation to the actuating forces (solenoid and spring). With the special closing element , ports P, A and T can be loaded with the maximum operating pressure and the flow can be directed into both directions ! In the initial position, the closing element is pressed onto the seat  by the spring, in spool position, it is pressed onto the seat by the solenoid . The flow is blocked in a leak-free manner.  Product description : Size 10Component series 1XMaximum operating pressure 350 barMaximum flow 40 lmin Feature : Direct operated directional seat valve with solenoid actuationSubplates (separate order)Blocked connection is leak-tightReliable switching when under pressure over longer periods of standstill Wet-pin DC solenoids with detachable coil (AC voltage possible by means of a rectifier)Solenoid coil is rotatable by 90°The coil can be changed without having to open the pressure-tight chamberElectrical connection as individual connectionWith concealed manual override, optionalInductive position switch and proximity sensors About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth.

In the initial position, the ballthe spool is pressed onto the seat by the spring  and by the solenoid in the switching position. The force of the solenoid  acts via the angled lever and the ball on the actuating plunger that is sealed on two sides. The chamber between the two sealing elements is connected to port P. Therefore, the valve system is pressure-compensated in relation to the actuating forces (solenoid or return spring). Therefore, the valves can be used up to 630 bar. Product description : Size 6Component series 3XMaximum operating pressure 420 bar 630 barMaximum flow 25 lmin Feature : 22-, 32- or 42-way versionAir-gap DC solenoids with detachable coilSolenoid coil is rotatable by 90°The coil can be changed without having to open the pressure-tight chamberElectrical connection as individual connectionOptional auxiliary operating deviceInductive position switch and proximity sensors (contactless) About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad.

Hydraulic pumps of type PV7...A are direct operated vane pumps with adjustable displacement.They basically comprise of housing, cover, rotor, vanes, stator ring, compression spring , set screw  and control plate .For limitation of the maximum flow, the pump is equipped with a set screw .The driven rotor  rotates within the stator ring . The centrifugal force presses the vanes  uided in the rotor  against the internal sliding surfaces of the stator ring . Suction and displacement procedureThe cells  necessary to transport the hydraulic fluid are formed by the vanes , the rotor , the stator , the control plate and the cover .The cell volume increases by the rotation of the rotor  and via the suction channel , the cells  are filled with hydraulic fluid. When the largest cell volume is achieved, the cells are separated from the suction side.If the rotor  is rotated further, connection to the pressure side is established, the cells narrow and displace the hydraulic fluid via the pressure channel (P) into the system. Pressure controlThe stator ring  is held in the eccentric initial position by the spring . The maximum operating pressure required in the system is set at the set screw  using the spring .The pressure building up by the load resistance acts at the pressure side on the inner sliding surface of the stator ring , against the force of the spring .

The pumps are valve-controlled, self-priming radial piston pumps with fixed displacement.They consist essentially of the housing , eccentric shaft  and  pump elements , with suction valve , pressure valve  and piston .Suction and displacement procedureThe pistons  are arranged radially to the eccentric shaft . The hollow piston  with the suction valve  is guided in a cylinder  and pressed onto the eccentric  by the spring . The radius of the piston running surface corresponds to the eccentric radius. The cylinder provides sealing against a hemispherical element .In downward movements of the piston , the working space  in the cylinder  is enlarged. Due to the resulting negative overpressure, the suction valve plate is raised from the sealing lip. Simultaneously, the connection from the suction chamber  to the working chamber  is realized by means of a radial groove  in the eccentric .The working chamber is filled with fluid. In upward movements of the piston , the suction valve  is closed and the pressure valve  is opened. The fluid now flows to the system via the pressure port . Production description : Size 1, 60 - 20, 00Component series 3XMaximum operating pressure 700 bar Feature : Fixed displacementSelf-priming, valve-controlledLong service life due to hydro-dynamically lubricated plain bearingsSeveral pressure ports with different cylinder combinations14 sizes, favorable grading for perfect device.

The SYDFEE is an electro-hydraulic control system based on an axial piston variable displacement pump for controlling pressure, flow and power without throttling losses in the energy line. The advantages are robustness, high efficiency, energy efficiency as well as a dynamic and highly accurate regulation. Production description : Version with axial piston variable displacement pump A10VSO...31Size 18 - 140Component series 2XMaximum operating pressure 280 bar Feature : A SYDFEE-2X control system is used for the electro-hydraulic control of swivel angle, pressure and power (partially optional, see type key pilot control and preload valve and ordering code) of an axial piston variable displacement pump.The control system consists of the following components:Axial piston variable displacement pump A10VSO...31VT-DFPE-.2X proportional valve as pilot valve with integrated electronics including inductive position transducer for valve position sensing.Position transducer for sensing the swivel anglePressure transducer with suitable signal level and dynamics (optionally HM 20, otherwise separate order)Preload valve with integrated pressure relief function SYDZ (optional) About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds.

The valve type Z1S is a direct operated check valve in sandwich plate design.It is used for the leakage-free blocking in one direction and allows for free flow in the opposite direction.The stroke of the plastic poppet  is limited by the plastic socket . The installed spring supports the closing movement. When no fluid flows through the valve, the spring keeps the plastic poppet  in closed position. Optimum leak-tightness is already achieved at low pressure  . Product description : Size 10Component series 4XMaximum operating pressure 350 barMaximum flow 100 lmin Feature : Sandwich plate valve for use in vertical stackingsVarious one and two-channel blocking functionsPerfect leak-tightness due to poppet made of high-performance plasticCorrosion-resistant housing design, optionalSuitability for various hydraulic fluids by replacement of external seal rings (can be retrofitted)Cost-effective replacement of wear parts thanks to individually available check valve installation setsWith measuring ports, optionalThrottle check valve, optional About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology.

The isolator valve type Z2S is a releasable check valve in sandwich plate design.It is used for the leakage-free blocking of one or two actuator ports, also in case of longer standstill times.Due to the pre-opening, there is a damped decompression of the pressurized liquid. Thus, possible switching shocks are avoided. Product description: Size 10Component series 3XMaximum operating pressure 315 barMaximum flow 120 lmin Feature : Sandwich plate valve for use in vertical stackingsFor the leakage-free blocking of one or two actuator ports, optionalVarious cracking pressuresWith pre-opening (standard); without pre-opening (optional)Check valve installation sets available individuallySpecial versions on request About us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc

Pressure valves type kav are pilot-operated pressure cut-off valves with steplessly adjustable switching pressure differentials. they basically consist of pilot control stage  and main stage . Product description : size 2component series amaximum operating pressure 350 barmaximum flow 140 lmin feature : mounting cavity rkav.2high switching capacityavailable in 4 pressure ratings (50, 100, 200, 350 bar)infinitely variable switching pressure differentialhexagon with protective cappilot unit with main spool about us : siedman (xiamen) hydraulic technology co;ltd is an professional supplier of hydraulic products , we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price .our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development , we have established several agents home and abroad , offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation , renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements. We deliver top quality product in time and achieve customer satisfaction through continual quality and process improvement .

The hydraulic fluid is directed to the throttling point via lateral bores . It is formed between the housing and the adjustable sleeve . By rotating the sleeve, the cross-section of the throttling point can be steplessly adjusted. Product description: Size 6 - 30Component series 1XMaximum operating pressure 315 barMaximum flow 400 lmin Feature : Suitable for installation in pipelinesRelated to pressure and viscosity About Us : Siedman (Xiamen) Hydraulic Technology Co;Ltd is an professional supplier of hydraulic products , we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price .Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development , we have established several agents home and abroad , offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation , renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements. We deliver top quality product in time and achieve customer satisfaction through continual quality and process improvement . Please feel free to contact us for all your requirement.

The valves type MK are pressure- and viscosity-dependent throttle check valves.Type MK (throttle check valve)If the valve is passed by the flow in throttling direction, the spring  and the hydraulic fluid push the poppet on the seat and the connection is blocked. Via lateral bores , the hydraulic fluid flow is directed to the throttling point between the housing and the adjustable sleeve . In the opposite direction, the pressure acts on the front face of the poppet , lifts it from the seat and releases the flow. The hydraulic fluid flow is released through the valve without throttling Product description: Size 6 - 30Component series 1XMaximum operating pressure 315 barMaximum flow 400 lmin Feature : Suitable for installation in pipelinesRelated to pressure and viscosity About Us : Siedman (Xiamen) Hydraulic Technology Co;Ltd is an professional supplier of hydraulic products , we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price .Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development , we have established several agents home and abroad , offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation , renewable energy market etc.

The flow control valve type 2 FRM is a 2-way flow control valve.It is used for maintaining a constant flow, independent of pressure and temperature.The valve basically consists of housing , rotary knob , orifice bush, pressure compensator and an optional check valve Product description: Size 6Component series 3XMaximum operating pressure 315 barMaximum flow 32 lmin Feature : Subplates (separate order)Check valve, optional2 adjustment types, optional:– Rotary knob with scale– Lockable rotary knob with scale  About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements. We deliver top quality product in time and achieve customer satisfaction through continual quality and process improvement.

2-way cartridge valves generally consist of control cover and installation kit . The control cover contains the control bores and optionally a stroke limitation function, a hydraulically controlled directional seat valve or a shuttle valve according to the required overall function. Additionally, electrically operated directional spool or seat valves can be installed at a control cover. The installation kit consists of a bushing , ring  , valve poppet , optionally with damping nose  or without damping nose  as well as closing spring .  Product description: Size 16 - 160Component series 6X, 2X, 7XMaximum operating pressure 420 barMaximum flow 25000 lmin Feature : Functional product designModular set-up:• Cartridge valve with various options• Control cover in various variants for realization of selected functions• Electronic monitoring of the switching position Power and flow-optimized design:• High flows• Low pressure drops• High switching velocities• Low leakage oil flowsRobust design:• High reliability• Long life cycleOther features:• Small installation size, low weight• Easy to service About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics.

The pilot control valve is a direct operated proportional valve. The control edge geometry has been optimized for the use as pilot control valve for proportional directional valves type 4wrke. The proportional solenoids are pressure-tight, wet-pin dc solenoids with detachable coils. They convert the electric current proportionally into mechanical force. An increase of the current results in a correspondingly higher solenoid force. The set solenoid force will remain constant over the entire control stroke product description: size 6component series 6xmaximum operating pressure 420 barmaximum flow 2 lminfeature : direct operated valve for limiting a system pressureproportional solenoid operationproportional solenoid with central thread and detachable coil about us: siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service.

Valves of type DBEM are pilot-operated pressure relief valves. They are used to limit the operating pressure in hydraulic systems. These valves can be used for the stepless setting of the pressure to be limited dependent on the electrical command value. The valves basically consist of the housing  with main spool insert , the sandwich plate valve with maximum pressure limitation and the proportional pilot control valve . Product description: Component series 7XMax. operating pressure 350 barFeature : Pilot-operated valves for system pressure limitationControlled by proportional solenoidMaximum pressure relief functionValve and control electronics from a single sourceExternal control electronics (separate order) About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers`.

The valves of type 3DRE(M) are electrically pilot-operated 3-way pressure reducing valves with pressurelimitation of the actuator. They are used for reducing a system pressure.Technical set-upThe valve consists of two main assemblies:Pilot control valve with proportional solenoid optionally with maximum pressure limitation ‐Main valve with main spool  Product description: Size 10, 16Component series 7XMax. operating pressure 350 barFlow, max. 300 lminFeature : Pilot-operated valves for pressure reduction  and limitation of a system pressureProportional solenoid operationActuation by proportional solenoid with central thread and detachable coilOptional maximum pressure limitationValve and control electronics from a single sourceExternal control electronicsLinear pressurecommand value characteristic curve About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable.

Pressure valves of type DBG are pilot-operated pressure relief valves. They are used for system pressure limitation. The pressure relief valves from this series mainly consist of a pilot control valve with electric motor as pressure adjustment elementand main valve with main spool insert. The system pressure is set by means of a DC motor with speed reduction transmission. The output shaft of the speed reduction transmission turns the cam that tensions the spring via the spring plate and thereby causes a pressure change. The pressure applied to channel A acts on the main spool. Simultaneously, pressure is applied to the spring-loaded side of the main spool and to the pilot poppet in the pilot control valve via the control lines which are equipped with nozzles. If the system pressure exceeds the value set at the spring, the pilot poppet opens.  Product description: Component series 1XMax. operating pressure 315 barFeature : Operation via DC motor with speed reduction transmissionFor threaded connection4 pressure ratingsWith actual value potentiometer or limit switchSelf-locking in case of power failure About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulator.

Proportional flow control valves of the 2fre .. Type comprise a 2-way function. They are capable of controlling a flow indicated by the electrical command value in a pressure- and largely temperature-compensated manner.the set-up basically consists of a housing, proportional solenoid with inductive position transducer, metering orifice , pressure compensator, stroke limitation as well as check valve. The flow setting is determined by the indication (0 to 100%) at the command value potentiometer. Via the amplifier as well as the proportional solenoid, the indicated command value has an effect on the adjustment of the metering orifice. The position of the metering orifice is recorded by the inductive position transducer. Any existing variations from the command value are corrected by the position control.the pressure compensator keeps the pressure drop at the metering orifice  at a constant value at all times. Thus, the flow is pressure-compensated. Product description: size 10, 16component series 4xmax. Operating pressure 315 barflow, max. 160 lmin feature : valve with pressure compensator for pressure-compensated controlling of a flow proportional solenoid operation with electrical position control for the metering orificeaxially movable position transducer coil, therefore an easy zero point calibration of the metering orifice is possible without having to interfere with the control electronics (electrical-hydraulic)low manufacturing tolerance of the valve and electric.

In the plant, the response pressure specified in the component marking is set at a flow of 2 lmin.The maximum admissible flow stated in the component marking (= numerical value instead of the character "G" in the component marking, see ordering code, type-examination tested safety valves) must not be exceeded. Product description : Size 10 - 32Component series 5XMaximum operating pressure 350 barMaximum flow 650 lmin Feature : For threaded connectionFor installation in block designs4 adjustment types for pressure adjustment, optionally • Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale5 pressure ratingsSolenoid-operated unloading via built-on directional spool valve or directional poppet valveHigh-power solenoidExplosion-protected solenoid (upon request) About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation

The valve type Z2FS is a throttle check valve in sandwich plate design. It is used for the flow limitation of one or two actuator ports. Two symmetrically arranged throttle check valves limit flows (by adjustable throttle spools) in one direction and allow free return flow in the opposite direction Product description: Size 16Component series 3XMaximum operating pressure 350 barMaximum flow 250 lmin Feature : Sandwich plate valveFlow limitation of 2 actuator portsAdjustment type: Spindle with hexagon socketMeter-in or meter-out throttling About Us : Siedman (Xiamen) Hydraulic Technology Co;Ltd is an professional supplier of hydraulic products , we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price .Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development , we have established several agents home and abroad , offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation , renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements. We deliver top quality product in time and achieve customer satisfaction through continual quality and process improvement .

The pilot control valve is a direct operated proportional valve. The control edge geometry has been optimized for the use as pilot control valve for proportional directional valves type 4WRKE. The proportional solenoids are pressure-tight, wet-pin DC solenoids with detachable coils. They convert the electric current proportionally into mechanical force. An increase of the current results in a correspondingly higher solenoid force. The set solenoid force will remain constant over the entire control stroke Product description: Size 10, 16, 25, 27, 32, 35Component series 3XMaximum operating pressure 350 barMaximum flow 3000 lminFeature : Pilot-operated 2-stage proportional directional valves with electrical position feedback of the main control spool and integrated electronics (OBE)Control of flow direction and sizeProportional solenoid operationElectrical position feedbackSpring-centered main control spoolPilot control valve: single-stage proportional directional valveMain stage with position control About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.

Axial piston pumps in swash plate and bent axis design are intended for the medium and high pressure range. Numerous variations in the designs, performance ranges and adjustment options offer perfect solutions for mobile and stationary application ranges. Product Description : Optimized medium pressure pump for high power machines Size 45 - 180 Nominal pressure 280 bar Maximum pressure 350 bar Open circuit Feature : Through drive for mounting of further pumps up to same nominal size Approved for high speeds Increased functional reliability Hydrostatically relieved swashplate bearing Large variety of controls Low noise Swashplate design Table of values Size 45 71 100 140 180 Displacementgeometric,  per revolution Vg max cm³ 45 71 100 140 180 Nominal pressure pnom bar 280 280 280 280 280 Maximum pressure pmax bar 350 350 350 350 350 Maximum speed at Vg max nnom rpm 1800 1800 1800 1800 1800 Flow at Vg max and nnom qV nom lmin 81 128 180 252 324 at Vg max and n = 1500 rpm qV 1500 lmin 67.5 106.7 150 210 270 Power at qV nom and pnom P kW 38 59.7 84 118 151 at qV 1500 and pnom P 1500 kW 67.5 106.7 150 210 270 Torque at Vg max and pnom M Nm 200 317 446 624 802 Weight (approx.) m kg 30 47 69 73 78 Pursuing a comprehensive understanding of these application areas and working closely with customers.

Our pumps are designed as a solution point of view where the products are compatible with each other in order to provide a whole portfolio for our customers. Our lineup of hydraulic pumps includes axial piston pumps, external gear pumps, internal gear pumps, gerotor pumps, vane pumps, radial piston pumps and electro-hydraulic pumps. Production description : All-purpose medium pressure pumpSize 18 - 140Nominal pressure 280 barMaximum pressure 350 barOpen circuit Feature : Through drive for mounting of further pumps up to same nominal sizeLow noiseLong service lifeShort control response timesExcellent suction characteristics2 drain portsSwashplate design Table of values Size 18 28 45 71 100 140 45 71 100 140 Version Standard High speed Displacementgeometric,  per revolution Vg max cm³ 18 28 45 71 100 140 45 71 100 140 Nominal pressure pnom bar 280 280 280 280 280 280 280 280 280 280 Maximum pressure pmax bar 350 350 350 350 350 350 350 350 350 350 Maximum speed at Vg max nnom rpm 3300 3000 2600 2200 2000 1800 3000 2550 2300 2050 Flow at Vg max and nnom qV nom lmin 59 84 117 156 200 252 135 178 230 287 at Vg max and n = 1500 rpm qV 1500 lmin 27 42 68 107 150 210 Power at qV nom and pnom P kW 30 39 55 73 93 118 63 83 107 134 at qV 1500 and pnom P 1500 kW 12.6 20 32 50 70 98 Torque at Vg max and pnom M Nm 80 125 200 316 445 623 200 316 445 623.

Siedman(Xiamen)Hydraulic Technology Co;Ltd supply  excellent quality hydraulic pumps, motors and replacement parts, delivered when you need them and at the most competitive prices. Product description : Robust high pressure pump for industrial applicationsSize 40 - 1000Nominal pressure 350 barMaximum pressure 400 barOpen circuit Feature : Robust pump with very long service life Low noise Short control response times Excellent suction characteristics Through drive for mounting of further pumps up to same nominal size Swashplate design Table of values Size 40 71 125 180 250 355 500 750 1000 250 355 500 750 Version Standard High speed With charge pump Displacement geometric,  per revolution Vg max cm³ 40 71 125 180 250 355 500 750 1000 250 355 500 750 Nominal pressure pnom bar 350 350 350 350 350 350 350 350 350 350 350 350 350 Maximum pressure pmax bar 400 400 400 400 400 400 400 400 400 400 400 400 400 Maximum speed 1) at Vg max nnom rpm 2600 2200 1800 1800 1500 1500 1320 1200 1000 1900 1700 1500 1500 Flow at Vg max and nnom qV nom lmin 104 156 225 324 375 533 660 900 1000 475 604 750 1125 at Vg max and n = 1500 rpm qV 1500 lmin 60 107 186 270 375 533 581 2) 770 2) 375 533 581 1125 Power at qV nom and pnom P kW 61 91 131 189 219 311 385 525 583 277 352 437 656 at qV 1500 and pnom P 1500 kW 35 62 109 158 219 311 339 449 219 311 339 65.

In order to reduce piping complexity, a flow control valve or pressure-relief valve can be integrated in the cover of the gear pump. Such solutions are used, for instance, for the hydraulic oil supply of power steering systems. The pump delivers a constant flow irrespective of the rotational speed. The residual flow is either returned internally to the suction port or distributed externally to other consumers. Production description : Platform FFixed displacementSize 4 - 28Continuous pressure up to 250 barIntermittent pressure up to 280 bar Feature : Consistent high quality based on large-volume productionLong service lifeSlide bearings for high loadsDrive shafts according to ISO or SAE and customer-specific solutionsLine ports: connection flange or screw threadCombination of several pumps possible About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc.

The length of the valve mounting screws of the sandwich plate valve must be selected according to the components mounted under and over the isolator valve.Depending on the application, screw type and tightening torque must be adjusted to the circumstances. Product description : Size 25Component series 5XMaximum operating pressure 315 barMaximum flow 450 lmin Feature : Sandwich plate valve for use in vertical stackingsPorting pattern according to ISO 4401-08-08-0-05 and NFPA T3.5.1 R2-2002 D08For the leakage-free blocking of one or two actuator ports, optionalVarious cracking pressuresPre-opening standardCheck valve installation sets available individuallySpecial versions on request About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory.

To ensure proper functioning, make sure that the pressure chamber of the electronic solenoid is filled with oil.The force of the electronic solenoid acts via the plunger on the control spool and pushes the latter from its rest position to the required end position. After de-excitation of the electronic solenoid, the return spring pushes the control spool back to its rest position.An optional manual override allows control spool to be moved without solenoid energization. Product description : Size 6Component series 6XMaximum operating pressure 350 barMaximum flow (DC) 80 lminMaximum flow (AC) 60 lmin Feature : 43-, 42- or 32-way versionHigh-power solenoidPorting pattern according to DIN 24340 form AWet-pin DC or AC solenoids with detachable coilSolenoid coil is rotatable by 90°The coil can be changed without having to open the pressure-tight chamberElectrical connection as individual or central connectionOptional auxiliary operating deviceSpool position monitoring, optional About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development

By means of structural design of the control spools and solenoids, switching shocks occurring when activating and deactivating the valves are significantly reduced.The switching shocks, measured as acceleration valuesa, can be reduced by up to approx. 85 % when compared to the standard valve depending on the design of the control spool (see Acceleration values).The directional valves basically consist of the housing , one or two solenoids, the control spool, and one or two return springs . Product description : Size 6Component series 7XMaximum operating pressure 315 barMaximum flow 60 lmin Feature : 43-, 42- or 32-way versionStandard versionWet-pin DC solenoidsSolenoid coil can be rotatedThe coil can be changed without having to open the pressure-tight chamberElectrical connection as individual connectionConcealed manual override About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application.

At the factory, the response pressure is set to a fixed maximum value using the adjustment type. Afterwards, the safety valve is sealed andor secured using a safety cap which cannot be disassembled in non-destructive manner.the safety valves are available with graded response pressures (in 5 bar steps). The valve version provided with a safety cap can no longer be adjusted. With valve versions equipped with rotary knob or hand wheel, the valve spring can be unloaded by the user and a response pressure lower than the factory setting can be set without the need of removing the lead seal. Product description : size 6 - 30component series 1xmaximum operating pressure 630 bar feature : as screw-in cartridge valve (cartridge)for threaded connection for sub plate mounting adjustment type for pressure adjustment, optionally: ‒ sleeve with hexagon and protective cap ‒ rotary knob ‒ hand wheel ‒ lockable rotary knob about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development, we have established several agents home and abroad

Proportional directional valves, direct operated, without electrical position feedback, with integrated electronics . Function:-With de-energized solenoids , central position of the control spool due to compression springs  Direct actuation of the control spool by energization of one proportional solenoid.Control spool is moved to the left in proportion to the electrical input signal Connection from P to A and B to T via orifice-type cross-sections with progressive flow characteristics Switching off of the solenoid Control spool is returned to the central position by the compression spring  Product description: Size 6, 10Component series 2XMaximum operating pressure 315 barMaximum flow 75 lmin Feature : Direct operated proportional directional valve, without electrical position feedback, with integrated electronics (OBE)Control of the direction and magnitude of a flowOperation by means of proportional solenoids with central thread and detachable coilSpring-centered control spool About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.

The function of this valve version basically corresponds to the valve with three spool positions. The 2 spool position valve is, however, only equipped with solenoid . Instead of the 2nd proportional solenoid, a plug screw is installed. Due to the design principle, internal leakage which may increase over the life cycle is inherent to the valves.The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve must be installed.  Product description: Size 6, 10Component series 2XMaximum operating pressure 315 barMaximum flow 180 lmin Feature : Direct operated proportional directional valve with electrical position feedback and integrated electronics (OBE)Control of flow direction and sizeOperation by means of proportional solenoids with central thread and detachable coilSpring-centered control spool About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application.

The function of this valve version basically corresponds to the valve with three spool positions. The 2 spool position valve is, however, only equipped with solenoid . Instead of the 2nd proportional solenoid, a plug screw is installed. Due to the design principle, internal leakage which may increase over the life cycle is inherent to the valves.The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve must be installed.  Product description: Size 6, 10Component series 2XMaximum operating pressure 315 barMaximum flow 180 lmin Feature : Direct operated proportional directional valve with electrical position feedback and integrated electronics (OBE)Control of flow direction and sizeOperation by means of proportional solenoids with central thread and detachable coilSpring-centered control spool About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application.

Siedman(Xiamen)Hydraulic Technology Co;Ltd supply  excellent quality hydraulic pumps, motors and replacement parts, delivered when you need them and at the most competitive prices. Product description : Robust high pressure pump for industrial applicationsSize 40 - 1000Nominal pressure 350 barMaximum pressure 400 barOpen circuit Feature : Robust pump with very long service life Low noise Short control response times Excellent suction characteristics Through drive for mounting of further pumps up to same nominal size Swashplate design Table of values Size 40 71 125 180 250 355 500 750 1000 250 355 500 750 Version Standard High speed With charge pump Displacementgeometric,  per revolution Vg max cm³ 40 71 125 180 250 355 500 750 1000 250 355 500 750 Nominal pressure pnom bar 350 350 350 350 350 350 350 350 350 350 350 350 350 Maximum pressure pmax bar 400 400 400 400 400 400 400 400 400 400 400 400 400 Maximum speed 1) at Vg max nnom rpm 2600 2200 1800 1800 1500 1500 1320 1200 1000 1900 1700 1500 1500 Flow at Vg max and nnom qV nom lmin 104 156 225 324 375 533 660 900 1000 475 604 750 1125 at Vg max and n = 1500 rpm qV 1500 lmin 60 107 186 270 375 533 581 2) 770 2) 375 533 581 1125 Power at qV nom and pnom P kW 61 91 131 189 219 311 385 525 583 277 352 437 656 at qV 1500 and pnom P 1500 kW 35 62 109 158 219 311 339 449 219 311 339 65.

The valve type Z2FS 10 is a throttle check valve in sandwich plate design. It is used for the main or pilot flow limitation of one or two actuator ports. Two throttle check valves aligned symmetrically to each other limit flows in one direction and allow free return flow in the opposite direction. In case of supply throttling, the hydraulic fluid is directed through channel A1 via throttling point formed by the control edge and the throttle spool to actuator. The throttle spool  can be axially adjusted via the spindle for adjustment of the throttling point. Simultaneously, the hydraulic fluid in channel is directed via the bore to the piston side . The active pressure and the spring force retain the throttle spool in throttle position. The hydraulic fluid return flow from actuator B2 displaces the throttle spool against the spring and enables the unobstructed flow as check valve. Depending on the installation position, the throttling effect may occur in supply or discharge.  Product description: Size 10Component series 3XMaximum operating pressure 315 barMaximum flow 160 lmin Feature : Sandwich plate valveFor the main or pilot flow limitation of 2 actuator ports.3 adjustment types:• Lockable rotary knob with scale• Spindle with internal hexagon and scale• Rotary knob with scaleMeter-in or meter-out throttlingCorrosion-protected design About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional sup.www.sdm-hyd.com

Proportional directional valves, direct operated, without electrical position feedback, with integrated electronics . Function:-With de-energized solenoids , central position of the control spool due to compression springs  Direct actuation of the control spool by energization of one proportional solenoid.Control spool is moved to the left in proportion to the electrical input signal Connection from P to A and B to T via orifice-type cross-sections with progressive flow characteristics Switching off of the solenoid Control spool is returned to the central position by the compression spring  Product description: Size 6, 10Component series 2XMaximum operating pressure 315 barMaximum flow 75 lmin Feature : Direct operated proportional directional valve, without electrical position feedback, with integrated electronics (OBE)Control of the direction and magnitude of a flowOperation by means of proportional solenoids with central thread and detachable coilSpring-centered control spool About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.

High-response hydraulics valves offer the greatest performance in proportional directional valve technology. Primarily used in closed loop systems to control position, velocity, pressure, or force – high-response proportional valves are a powerful tool for advancing intelligent hydraulics in your system Product description: Size 10, 16, 25Component series 1XMaximum operating pressure 350 barMaximum flow 870 lminFeature : Pilot-operated high-response directional valve, 2-stage, with electrical position feedback of the main control spool and integrated electronics (OBE)It is suitable for the position, pressure, force and velocity control when there are simultaneously high requirements on the dynamics in the small signal range and the response sensitivityPilot control valve: single-stage servo valve according to nozzleflapper plate principlePosition sensing of the main control spool by means of an inductive position transducerHigh response sensitivity and low hysteresisFilterelement austauschbarIntegrated control electronics, external zero point correction possible About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement.

The length of the valve mounting screws of the sandwich plate valve must be selected according to the components mounted under and over the isolator valve.Depending on the application, screw type and tightening torque must be adjusted to the circumstances. Product description : Size 25Component series 5XMaximum operating pressure 315 barMaximum flow 450 lmin Feature : Sandwich plate valve for use in vertical stackingsPorting pattern according to ISO 4401-08-08-0-05 and NFPA T3.5.1 R2-2002 D08For the leakage-free blocking of one or two actuator ports, optionalVarious cracking pressuresPre-opening standardCheck valve installation sets available individuallySpecial versions on request About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations.

A4VSO Hydraulic pumps is widely used in manufacturing and technology applications .Keeping a market expectations mindset, we are  setting a new standard for hydraulic pumps with continuous development at the highest standards and quality. our pumps are designed for high reliability and efficiency. Product description : Robust high pressure pump for industrial applicationsSize 40 - 1000Nominal pressure 350 barMaximum pressure 400 barOpen circuit Feature : Robust pump with very long service life Low noise Short control response times Excellent suction characteristics Through drive for mounting of further pumps up to same nominal size Swashplate design Table of values Size 40 71 125 180 250 355 500 750 1000 250 355 500 750 Version Standard High speed With charge pump Displacementgeometric,  per revolution Vg max cm³ 40 71 125 180 250 355 500 750 1000 250 355 500 750 Nominal pressure pnom bar 350 350 350 350 350 350 350 350 350 350 350 350 350 Maximum pressure pmax bar 400 400 400 400 400 400 400 400 400 400 400 400 400 Maximum speed 1) at Vg max nnom rpm 2600 2200 1800 1800 1500 1500 1320 1200 1000 1900 1700 1500 1500 Flow at Vg max and nnom qV nom lmin 104 156 225 324 375 533 660 900 1000 475 604 750 1125 at Vg max and n = 1500 rpm qV 1500 lmin 60 107 186 270 375 533 581 2) 770 2) 375 533 581 1125 Power at qV nom and pnom P kW 61 91 131 189 219 31.

Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy (hydrostatic energy i.e. flow, pressure). It generates flow with enough power to overcome pressure induced by the load at the pump outlet. When a hydraulic pump operates, it creates a vacuum at the pump inlet, which forces liquid from the reservoir into the inlet line to the pump and by mechanical action delivers this liquid to the pump outlet and forces it into the hydraulic system. Hydrostatic pumps are positive displacement pumps while hydrodynamic pumps can be fixed displacement pumps, in which the displacement (flow through the pump per rotation of the pump) cannot be adjusted, or variable displacement pumps, which have a more complicated construction that allows the displacement to be adjusted. Although, hydrodynamic pumps are more frequent in day-to-day life. Hydrostatics pump which are of various types works on the principle of Pascal's law. It states that the increase in pressure at one point of the enclosed liquid in equilibrium of rest is transmitted equally to all other points of the liquid, unless the effect of gravity is neglected. Product Description : Optimized medium pressure pump for high power machines Size 45 - 180 Nominal pressure 280 bar Maximum pressure 350 bar Open circuit Feature : Through drive for mounting of further pumps up to same nominal size Approved .

We have a large range of pumps that can be your choice , the  lineup of pumps includes: Axial Piston Pumps, External Gear Pumps, Internal Gear Pumps, Gerotor Pumps, Vane Pumps, Radial Piston Pumps and Electro-hydraulic Pumps Production description : All-purpose medium pressure pumpSize 18 - 140Nominal pressure 280 barMaximum pressure 350 barOpen circuit Feature : Through drive for mounting of further pumps up to same nominal sizeLow noiseLong service lifeShort control response timesExcellent suction characteristics2 drain portsSwashplate design Table of values Size 18 28 45 71 100 140 45 71 100 140 Version Standard High speed Displacementgeometric,  per revolution Vg max cm³ 18 28 45 71 100 140 45 71 100 140 Nominal pressure pnom bar 280 280 280 280 280 280 280 280 280 280 Maximum pressure pmax bar 350 350 350 350 350 350 350 350 350 350 Maximum speed at Vg max nnom rpm 3300 3000 2600 2200 2000 1800 3000 2550 2300 2050 Flow at Vg max and nnom qV nom lmin 59 84 117 156 200 252 135 178 230 287 at Vg max and n = 1500 rpm qV 1500 lmin 27 42 68 107 150 210 Power at qV nom and pnom P kW 30 39 55 73 93 118 63 83 107 134 at qV 1500 and pnom P 1500 kW 12.6 20 32 50 70 98 Torque at Vg max and pnom M Nm 80 125 200 316 445 623 200 316 445 623 Weight (approx.) m kg 12 15 21 33 45 60 21 33 45 60 About Us : Siedman (Xiamen) Hydraulic Technology

It is the central task of external gear pumps to convert mechanical energy (torque and speed) into hydraulic energy (flow and pressure). To reduce heat losses, our external gear units offer very high efficiencies. They are realized by pressure-dependent gap sealing and highly precise production technology. The external gear pump consists essentially of a pair of gear wheels supported in bearing bushes and the housing with a front and a rear cover.the drive shaft protrudes from the front cover where it is usually sealed by the shaft seal ring. The bearing forces are absorbed by slide bearings. These are designed for high pressures and have excellent dry-running qualities, especially at low rotational speeds. The gear wheels have 12 teeth. This keeps both flow pulsation and noise emission to a minimum.the internal sealing of the pressure chambers is achieved by operating pressure-dependent forces. This ensures optimum efficiency. On the outer face, the movable bearing bushes are pressurized with operating pressure and pressed as seals against the gear wheels. Special seals form the boundary of the pressurized zone. The radial sealing at the tips of the gear teeth against the case is provided by smallest possible gaps that are formed pressure-dependent between the gear wheels and the housing. Production description : platform fixed displacement size 4 - 28continuous pressure up to 250 bar intermittent pressure up to 280 bar feature : consistent high quality based on large-volume

Hydraulic pumps of type PGH are gap-compensated internal gear pumps with constant displacement.They basically comprise of housing , bearing cover , internal gear , pinion shaft , plain bearings , axial washers , end cover , mounting flange  and stop pin , as well as the segment filler element  consisting of segment , segment support  and the seal rolls .Suction and displacement procedureThe hydrodynamically supported pinion shaft  drives the internally geared internal gear  n the displayed direction of rotation.During the rotation, there is a volume increase over an angle of approx. 90° in the suction range. An underpressure results and fluid flows into the chambers.The sickle-shaped segment filler element  separates suction and pressure chamber. In the pressure chamber, the teeth of the pinion shaft  engage in the space between the teeth of the internal gear  again. The liquid is displaced via the pressure channel  Production description : Frame size 2, 3Size 5 - 16Component series 2XMaximum operating pressure 350 barMaximum displacement 16 cm³ Feature : Fixed displacementLow operating noiseLow flow pulsationHigh efficiency also at low speed and viscosity due to sealing gap compensationSuitable for broad viscosity and speed rangesAll frame sizes and sizes can be arbitrarily combinedCan be combined with internal gear pumps, radial piston pumps and external gear pumps About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is anwww.sdm-hyd.com

Pressure peaks in the tank line to two or several valves can result in unintended movements of the control spool in the case of valves with detent! we therefore recommend that separate return lines be provided or a check valve installed in the tank line.for design reasons, internal leakage is inherent to the valves, which may increase over the life cycle. Product description : size 6component series 6xmaximum operating pressure 350 barmaximum flow 70 lminfor potentially explosive areas (ii 2g). Feature : 43-, 42- or 32-way versionfor intended use in potentially explosive atmospher- area of application in accordance with the explosion protection directive 201434eu: ii 2g- type of protection of the valve solenoids: ex eb mb iic t4 gb according to en 60079-7 en 60079-18wet-pin dc or ac solenoidselectrical connection with individual connection and cable glandwith manual override, optional about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution.

The isolator valve type Z2S is a releasable check valve in sandwich plate design.It is used for the leakage-free blocking of one or two actuator ports, also in case of longer standstill times.Due to the pre-opening, there is a damped decompression of the pressurized liquid. Thus, possible switching shocks are avoided. Product description: Size 16Component series 5XMaximum operating pressure 315 barMaximum flow 300 lmin Feature : Sandwich plate valve for use in vertical stackingsFor the leakage-free blocking of one or two actuator ports, optionalVarious cracking pressuresWith pre-openingCheck valve installation sets available individuallySpecial versions on request About us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements.

The isolator valve type SVSL is a pilot operated check valve for subplate mounting. It is used for the leakage-free blocking of one actuator port, also in case of longer standstill times.The valve basically consists of a housing , a seat poppet , a compression spring , a control spool  as well as of a pre-opening as ball seat valve , which is optional. Product description : Size 25Component series 5XMaximum operating pressure 315 barMaximum flow 450 lmin Feature : Sandwich plate valve for use in vertical stackingsPorting pattern according to ISO 4401-08-08-0-05 and NFPA T3.5.1 R2-2002 D08For the leakage-free blocking of one or two actuator ports, optionalVarious cracking pressuresPre-opening standardCheck valve installation sets available individuallySpecial versions on request About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc.

The directional valve of the type M-.SED is a direct operated directional seat valve with solenoid actuation. It controls the start, stop and direction of flow and mainly consists of a housing , the solenoid , the valve seats  and  as well as of the closing element .  The manual override  allows for the switching of the valve without solenoid energization. Product description : Size 10Component series 1XMaximum operating pressure 350 barMaximum flow 40 lmin Feature : Direct operated directional seat valve with solenoid actuationSubplates (separate order)Blocked connection is leak-tightReliable switching when under pressure over longer periods of standstill Wet-pin DC solenoids with detachable coil (AC voltage possible by means of a rectifier)Solenoid coil is rotatable by 90°The coil can be changed without having to open the pressure-tight chamberElectrical connection as individual connectionWith concealed manual override, optionalInductive position switch and proximity sensors About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development.

The SEW type directional valve is a directional seat valve with solenoid actuation. It controls the start, stop and direction of flow.The valve basically consists of the housing , the solenoid , the hardened valve system  as well as the ballthe spool as closing elemen. Product description : Size 6Component series 3XMaximum operating pressure 420 bar 630 barMaximum flow 25 lmin Feature : 22-, 32- or 42-way versionAir-gap DC solenoids with detachable coilSolenoid coil is rotatable by 90°The coil can be changed without having to open the pressure-tight chamberElectrical connection as individual connectionOptional auxiliary operating deviceInductive position switch and proximity sensors (contactless) About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectation.

Directional valves of type we are solenoid-actuated directional spool valves. They control the start, stop and direction of a flow.the directional valves basically consist of the housing , one or two electronic solenoids , the control spool and one or two return springs .in the de-energized condition, the control spool  is held in the central position or in the initial position by the return springs except for impulse spools. The control spool  is actuated by wet-pin electronic solenoids  product description : size 6component series 6xmaximum operating pressure 350 barmaximum flow (dc) 80 lminmaximum flow (ac) 60 lmin feature : 43-, 42- or 32-way versionhigh-power solenoidporting pattern according to din 24340 form awet-pin dc or ac solenoids with detachable coilsolenoid coil is rotatable by 90°the coil can be changed without having to open the pressure-tight chamberelectrical connection as individual or central connectionoptional auxiliary operating devicespool position monitoring, optional about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.

The directional valve type WE is a solenoid-actuated directional spool valve. It controls the start, stop and direction of a flow.The directional valve basically consists of housing , one or two electronic solenoids , control spool , and the return springs . When de-energized, the control spool  is held in the central position or in the initial position by the return springs  (except for version "O"). The control spool  is actuated by wet-pin electronic solenoids .When the electronic solenoid  is switched off, the return spring  pushes the control spool  back to its rest position.A manual override  allows for the manual switching of the valve without solenoid energization.To ensure proper functioning, make sure that the pressure chamber of the solenoid is filled with oil. Product description : Size 10Component series 3X, 4XMaximum operating pressure 315 barMaximum flow 120 lmin Feature : 43-, 42- or 32-way versionHigh-power solenoidWet-pin AC solenoids with detachable coilSolenoid coil is rotatable by 90°The coil can be changed without having to open the pressure-tight chamberElectrical connection as individual connection or central connectionOptional auxiliary operating device About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price.

Valve type H-WH is a directional spool valve with hydraulic actuation. It controls the start, stop and direction of a flow. The directional valve basically consists of the valve housing , the main control spool , one or two return springs  and  at valves with spring return or spring centering as well as the diversion plate . The main control spool is actuated directly by pressurization. The main control spool  is held in zero or initial position by springs or pressurization. Product description : Size 10, 16, 25 (H-WH22), 25 (H-WH25), 32Component series 4X, 7X, 6XMaximum operating pressure 350 barMaximum flow 1100 lmin Feature : Type of actuation: (external pilot control): HydraulicFor subplate mounting43-, 42- or 32-way versionSpring or pressure centering, spring end position or hydraulic end positionOptional versions:- Stroke setting andor spool position monitoring About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution.

Pressure relief valves of type dbd are direct operated seat valves. They are used for limiting a system pressure. The valves basically consist of sleeve , spring , poppet with damping piston  (pressure rating 25 bar - 400 bar) or ball  (pressure rating 630 bar) and adjustment type . The system pressure can be set steplessly via the adjustment type . The spring  pushes the poppet  or the ball onto the seat. Channel p is connected to the system. The pressure existing in the system acts on the poppet surface (or the ball). If the pressure in channel p exceeds the value set at the spring , the poppet  or the ball opens against the spring . Now, hydraulic fluid from channel p flows into channel t. The stroke of the poppet  is limited by the embossing . Product description : size 6 - 30component series 1xmaximum operating pressure 630 bar feature : as screw-in cartridge valve (cartridge)for threaded connectionfor subplate mountingadjustment type for pressure adjustment, optionally: ‒ sleeve with hexagon and protective cap ‒ rotary knob ‒ hand wheel ‒ lockable rotary knob about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power unit.

Pressure valve type DB is a pilot-operated pressure relief valve. It is used for limiting the operating pressure.The pressure relief valves  basically consist of the main valve  with main spool insert and pilot control valve  with pressure adjustment element Product description : Size 10 - 32Component series 5XMaximum operating pressure 350 barMaximum flow 650 lmin Feature : For threaded connectionFor installation in block designs4 adjustment types for pressure adjustment, optionally • Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale5 pressure ratingsSolenoid-operated unloading via built-on directional spool valve or directional poppet valveHigh-power solenoidExplosion-protected solenoid (upon request) About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc.

Pressure valves of type zdb and z2db are pilot-operated pressure relief valves in sandwich plate design. They are used for limiting a system pressure. The valves basically consist of the housing and one or two pressure valve cartridges. The system pressure can be set via the adjustment type .in the initial position the valves are closed. The pressure in channel a acts on the spool . At the same time, pressure is applied to the spring-loaded side of the spool via nozzle and to the pilot poppet via nozzle. Product description : size 10component series 4xmaximum operating pressure 315 barmaximum flow 100 lmin feature : sandwich plate valve4 pressure ratings6 circuit optionswith 1 or 2 pressure valve cartridges4 adjustment types for pressure adjustment, optionally • rotary knob• sleeve with hexagon and protective cap• lockable rotary knob with scale• rotary knob with scalecorrosion-protected design about us : siedman (xiamen) hydraulic technology co; ltd is an professional supplier of hydraulic products, we have our own brand mannesmann rexroth, and also provide products of bosch-rexroth. We provide good quality, best service and reasonable price. Our products include pump, motors, cylinder, valves, manifolds and plates, electronics, systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.after many years of development, we have established several agents home and abroad.

The pressure valve type DA is a pilot-operated pressure cut-off valve. For example, it is used in accumulator charging circuits. Here, an accumulator is filled until the accumulator charging pressure is reached. After reaching the accumulator pressure, the valve switches the flow to depressurized circulation until the pressure in the hydraulic system has fallen by the switching pressure differential. Afterwards, the charging process is started again.  Product description : Size 10 - 32Component series 5XMaximum operating pressure 315 barMaximum flow 400 lmin Feature : For subplate mountingAs cartridge valve4 adjustment types, optionally:• Rotary knob• Adjustment spindle with protective cap• Lockable rotary knob with scale• Rotary knob with scale 4 pressure ratingsSolenoid-operated unloading via built-on directional spool valve About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application.

The valve type ZDR 6 DP...XC is a direct operated pressure reducing valve in sandwich plate design and 3-way version, i. e. with pressure limitation of the secondary circuit. It is used to limit a system pressure. The pressure reducing valve basically comprises housing , control spool , compression spring , adjustment element and an optional check valve. The secondary pressure can be set via the adjustment element .  Product description : Size 6Component series 4XMaximum primary operating pressure 315 barMaximum flow 50 lminFor potentially explosive areas Feature : as a sandwich plate valve type ZDR6DP...XC  • 4 pressure ratings • Adjustment element as rotary knob  About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting.

The valve type ZDR is a direct operated pressure reducing valve in sandwich plate design with pressure limitation of the secondary circuit. It is used to reduce the system pressure. The pressure reducing valve basically comprises housing , control spool , compression spring , adjustment type  and an optional check valve. The secondary pressure is set via the adjustment type . Product description : Size 10Component series 5XMaximum operating pressure 210 barMaximum flow 80 lmin Feature : Sandwich plate valve4 pressure ratings4 optional adjustment types:• Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale Check valve, optional  About Us : Siedman (Xiamen) Hydraulic Technology Co;Ltd is an professional supplier of hydraulic products , we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price .Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development , we have established several agents home and abroad , offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation , renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations.

Pressure valves type DR are pilot-operated pressure reducing valves controlled from the secondary circuit. The pressure reducing valves basically consist of the main valve  with main spool insert  and pilot control valve with pressure adjustment element.  Product description : Size 10 - 32Component series 5XMaximum operating pressure 350 barMaximum flow 400 lmin Feature : For subplate mountingFor threaded connectionAs cartridge valve4 optional adjustment types:• Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratingsCheck valve, optional (subplate mounting only) About Us : Siedman (Xiamen) Hydraulic Technology Co;Ltd is an professional supplier of hydraulic products , we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price .Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development , we have established several agents home and abroad , offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation , renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements.

The pressure valve type 3DR is a pilot-operated 3-way pressure reducing valve with pressure limitation of the secondary circuit. It is used to reduce the system pressure. The pressure reducing valve basically consists of the main valve with control spool and pilot control valve  with pressure adjustment element . The valve is open in initial position. Hydraulic fluid can flow from channel P to channel A without restrictions. The pressure in channel A is simultaneously applied via the bore at the piston area opposite the compression spring. Simultaneously, pressure is applied via the nozzle to the spring-loaded side of the control spool and via channel  to ball in the pilot control valve . Depending on the setting of the compression spring , pressure builds up upstream of the ball and in channel holding the control spool in open position. Hydraulic fluid flows from channel P via the control spool to channel A until a pressure builds up in channel A exceeding the pressure value set at the compression spring and opening the ball .  Product description : Size 10Component series 6XMaximum operating pressure 315 barMaximum flow 120 lmin Feature : Valve for reduction  and limitation  of a system pressure4 pressure ratings4 adjustment elements: • Rotary knob • Sleeve with hexagon and protective cap • Lockable rotary knob with scale • Rotary knob with scale.

In case of supply throttling, the hydraulic fluid is directed through via throttling point to actuator. The throttle spool  can be axially adjusted via the spindle  for adjustment of the throttling point .The hydraulic fluid return flow from actuator displaces the throttle spool  and enables the unobstructed flow as check valve. Depending on the version , the throttling effect may occur in supply or discharge Product description: Size 25Component series 3XMaximum operating pressure 350 barMaximum flow 360 lmin Feature : Sandwich plate valveFor limiting the main or pilot flow of two consumer portsAdjustment type: Spindle with hexagon socketFor supply or discharge throttling About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations

An upstream pressure compensator is included to ensure a pressure-independent and constant flow at throttling point . Temperature independence is achieved thanks to the orifice design of the throttling point. The free return flow from channel B to channel A is directed via the check valve.The regulated flow only flows from channel A to B.For oscillating flows (forward and return flow), a rectifier sandwich plate type Z4S can be installed under the flow control valve.  Product description: Size 10, 16Component series 3XMaximum operating pressure 315 barMaximum flow 160 lmin Feature : For subplate mountingMechanical actuationPressure compensator stroke limitation, optionalStart-up jump reductionFlow control in both directions through rectifier sandwich plate About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc

2-way cartridge valves are elements that have been designed for a compact block design. In most cases, the cover is also the connection from the control side of the power section to the pilot control valves. By control with respective pilot control valves, the power section can be applied for pressure, directional and throttle functions or a combination of these functions. Particularly efficient solutions are realized by adjustment of the size to various flows of the individual ways of an actuator. The application of power sections of elements for multiple functions is very cost-effective.  Product description: Size 16 - 160Component series 6X, 2X, 7XMaximum operating pressure 420 barMaximum flow 25000 lmin Feature : Valve poppet with or without damping nose2 area ratiosHigher pressure ranges upon request About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators. After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation

The 42 and 43 proportional directional valves are designed as direct operated devices in plate design. Operation by means of proportional solenoids with central thread and detachable coil. The solenoids are controlled via integrated electronics. Set-up:The valve basically consists of:Housing  with connection surface ‐Control spool with compression springs Solenoids  with central thread ‐Integrated electronics  Product description: Size 6, 10Component series 2XMaximum operating pressure 315 barMaximum flow 75 lmin Feature : Direct operated proportional directional valve, without electrical position feedback, with integrated electronics (OBE)Control of the direction and magnitude of a flowOperation by means of proportional solenoids with central thread and detachable coil Spring-centered control spool About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation.

Sandwich plate valve with 4 adjustment types for pressure adjustment, optionally. They are used for reducing a system pressure.They include the housing and 1 or 2 pressure valve cartridges. The system pressure can be set via the adjustment type . Product description : Size 10Component series 4XMaximum operating pressure 315 barMaximum flow 100 lmin Feature : Sandwich plate valve4 pressure ratings6 circuit optionsWith 1 or 2 pressure valve cartridges4 adjustment types for pressure adjustment, optionally • Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scaleCorrosion-protected design About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements.

A kind of Pilot-operated pressure relief valve ,  In the initial position the valves are closed. The pressure in channel A acts on the spool . At the same time, pressure is applied to the spring-loaded side of the spool  via nozzle  and to the pilot poppet  via nozzle . If the pressure in channel A exceeds the value set at the spring , the pilot poppet opens. Product description : Size 6Component series 4XMaximum operating pressure 315 barMaximum flow 60 lmin Feature : Sandwich plate valvelocating hole)4 pressure ratings5 circuit optionsWith 1 or 2 pressure valve cartridges4 adjustment types for pressure adjustment, optionally • Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scaleCorrosion-protected design About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc.

The pump flow is introduced into the accumulator of the system via main port . If the pressure at the actuator in main port exceeds the set top switching pressure, the connection  is opened and the pump flow is switched to depressurized circulation . If the pressure at the actuator in main port falls below the set bottom switching pressure, the connection is closed and the pump flow is directed back into the accumulator of the system.  Product description : Size 2Component series AMaximum operating pressure 350 barMaximum flow 140 lmin Feature : Mounting cavity RKAV.2High switching capacityAvailable in 4 pressure ratings (50, 100, 200, 350 bar)Infinitely variable switching pressure differentialHexagon with protective capPilot unit with main spool About Us : Siedman (Xiamen) Hydraulic Technology Co;Ltd is an professional supplier of hydraulic products , we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price .Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development , we have established several agents home and abroad , offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation , renewable energy market etc.

For actuator velocity adjustment (main flow limitation), the twin throttle check valve is installed between the directional valve and the subplate.  With pilot-operated directional valves, the twin throttle check valve can be applied for switching time adjustment (pilot flow limitation). In this case, it is installed between the pilot control valve and the main valve.  Product description: Size 6Component series 4XMaximum operating pressure 315 barMaximum flow 80 lmin Feature : Sandwich plate valveFor the main or pilot flow limitation of 2 actuator ports.4 adjustment types:• Setscrew with lock nut and protective cap• Lockable rotary knob with scale• Spindle with internal hexagon and scale• Rotary knob with scale For supply or discharge throttling About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc

The compression spring presses the pressure compensator downwards against its stop and keeps the pressure compensator in the open position when there is no flow through the valve. The pressure compensator  moves into the controlled position until the forces balance. If the pressure in channel A rises, the pressure compensator  moves in the closing direction until the forces are balanced again. Due to this continuous compensation of the pressure compensator , a constant flow is obtained.  Product description: Size 6Component series 3XMaximum operating pressure 315 barMaximum flow 32 lmin Feature : Subplates (separate order)Check valve, optional2 adjustment types, optional:– Rotary knob with scale– Lockable rotary knob with scale  About Us : Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc.

Valves of type 4WRKE are 2-stage proportional directional valves. They control the flow direction and size. The main stage is position-controlled so that the control spool position is independent from flow forces also in the case of bigger flows.The valves mainly consist of the pilot control valve , the housing , the main control spool , the covers , the centering spring , the inductive position transducer and the pressure reducing valve . If there is no input signal, the main control spool  will be kept in the central position by the centering spring . Both control chambers in the covers are connected to the tank via the valve control spool . The main control spool is connected to suited control electronics via the inductive position transducer . Both the position change of the main control spool and the change of the command value at the junction summing of the amplifier create a voltage difference. Product description: Size 10, 16, 25, 27, 32, 35Component series 3XMaximum operating pressure 350 barMaximum flow 3000 lminFeature : Pilot-operated 2-stage proportional directional valves with electrical position feedback of the main control spool and integrated electronics (OBE)Control of flow direction and sizeProportional solenoid operationElectrical position feedbackSpring-centered main control spoolPilot control valve: single-stage proportional directional valveMain stage with position control About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional.

With de-energized proportional solenoids  central position of the main stage control spool  due to centering spring  and pressure feed back ▪Control of the main stage control spool  via the pilot control valve  → the main stage control spool is positioned in a regulated manner ▪Controlling the control spool of the pilot control valve  by changing the solenoid force of the proportional solenoids ▪Connection of the command and actual values in the integrated electronics ▪Pilot oil supply to the pilot control valve internally via port P or externally via port X Pilot oil return internally via port T or externally via Y to the tank ▪With a command value of 0 V, the electronics control the main stage control spool  in central position  Product description: Size 10 - 35Component series 4XMaximum operating pressure 350 barMaximum flow 3000 lminNominal flow 25 lmin 50 lmin 100 lmin, 125 lmin 150 lmin 200 lmin 220 lmin, 220 lmin 350 lmin, 500 lmin, 400 lmin 600 lmin, 1000 lmin.Feature : Reliable - proven and robust designSafe- Automatic pressure compensation in the control chambers of the main stage by the pilot controlvalve- Control spool of the main stage in the springcentered central position andor in the offset position- Optionally with spool position monitoring Flexible - suitable for position, velocity and pressure controlPrecise - high response sensitivity.

Build-up of the pilot pressure in the control chamber as function of the command value. Actuator pressure present in port P1 to the spring chamber via channel  and nozzle . Increase in the pressure  to the set pressure of the pilot control valve  leads to the movement of the main control spool  to the left. Pressure  is almost identical with the set pressure at the pilot control valve .  Product description: Size 6Component series 1XMax. operating pressure 315 barFlow, max. 30 lminFeature : Operation by means of a proportional solenoidType ZDREE with integrated electronics (OBE) About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder, valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements. We deliver top quality product in time and achieve

For hydraulic protection against an inadmissibly high electric control current at the proportional solenoid, you can optionally install a spring-loaded pressure relief valve as maximum pressure limitation . The maximum pressure limitation is pre-set based on the relevant pressure rating.Pressure reduction:Build-up of the pilot pressure in the control chamber as a function of the command value. Pressure build-up in the spring chamber via nozzle and movement of the main spool to the right.   Increase in the pressure to the set pressure of the pilot control valve leads to the movement of the main spool to the left. Pressure in port A is almost identical with the set pressure at the pilot control valve .  Product description: Size 10, 16Component series 7XMax. operating pressure 350 barFlow, max. 300 lminFeature : Pilot-operated valves for pressure reduction  and limitation of a system pressureProportional solenoid operationActuation by proportional solenoid with central thread and detachable coilOptional maximum pressure limitationValve and control electronics from a single sourceExternal control electronicsLinear pressurecommand value characteristic curve About Us: Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors.

Proportional flow control valves of the 2FRE ... type comprise a 2-way function. They are capable of controlling a flow indicated by the electrical command value in a pressure- and largely temperature-compensated manner.The set-up basically consists of a housing, proportional solenoid with inductive position transducer, metering orifice , pressure compensator, stroke limitation as well as check valve. The flow setting is determined by the indication (0 to 100%) at the command value potentiometer. Via the amplifier as well as the proportional solenoid, the indicated command value has an effect on the adjustment of the metering orifice. The position of the metering orifice is recorded by the inductive position transducer. Any existing variations from the command value are corrected by the position control.The pressure compensator keeps the pressure drop at the metering orifice  at a constant value at all times. Thus, the flow is pressure-compensated. Product description: Size 10, 16Component series 4XMax. operating pressure 315 barFlow, max. 160 lminFeature : Valve with pressure compensator for pressure-compensated controlling of a flowProportional solenoid operationWith electrical position control for the metering orificeAxially movable position transducer coil, therefore an easy zero point calibration of the metering orifice is possible without having to interfere with the control electronics (electrical-hydraulic)Low manufacturing tolerance of the valve and electric