Hangzhou Zhengli Automation Control Syst

We are offering proportional integral control valve.Purpose proportion integral regulating valve zlvg-7000 series thread copper valve could be matched with zlva-7150 or zlva-3000 actuator, could regulate cool or heat water flow, is widely applied to control liquid for central air-condition, heating and water treatment systemmaterial and technical data sealer of valve stem: y gasket ring and o type combination, nbr rubber seal component, ptfe seal cover valve stem: stainless steel aisi304valve plug: brass other components are all in brass. pressure-bearing:1.6mpa; service medium: water; liquid temperature: 195connection manner: bsp parallel inner screw (bs21); flow characteristics: equal percentage leakage amountless than kv value 0.05%installation and maintenance valve stem goes down to cut off the valve. keep the pipe clean before installing valve, without oxide skin and metal sheet or other sundries. make sure homocentric by connecting pipe and valve body, unaffected by vibration, flow direction shall be same as indication in the valve body. the actuator shall be install above valve body vertically, leave sufficient space for daily maintenance (such as disassemble actuator) cut off or insulate power when make maintenance to valve, without pressure for water system.

We are offering proportional integral control valve.Purposeproportion integral regulating valve zlva-7150 series actuator is straight route actuator, could be matched with zlvg-7000 series valve body, as to achieve regulation function on pipe medium flow. Widely applied to air condition and heating system, could be also matched with different connector and other valves.Specification on typezlva-7150floating type, built-in 24vac two-way reversible motor, accept switch type control signal, supply incremental control.Characteristicslow ac pressure synchronous reversible motor, with function of hysteresis clutch protection. adopt small size route limit switch. inflaming retardant abs engineering plastic cover valve position indicator suitable for straight route regulating valve under 20mmno noise, with big output torque. easy installation

We are offering proportional integral control valve.Purposeproportion integral regulating valve zlva-7000 series actuator could be matched with zlvg-7000 series valve body, as to achieve regulation function on pipe medium flow. Widely applied to air condition and heating systemspecification on typezlva-7000floating type, built-in 24vac two-way reversible motor, accept switch type control signal, supply incremental control. Zlva-7100floating type, built-in 220vac two-way reversible motor, accept switch type control signal, supply incremental control.zlva-7102intellectual type, accept and feedback 0-10v or 4-20ma control signal, supply proportion controlcharacteristicslow ac pressure synchronous reversible motor, with function of hysteresis clutch protection. adopt small size route limit switch. inflaming retardant abs engineering plastic cover suitable for straight route regulating valve under 23mmno noise, with big output torque.

We are offering proportional integral control valve.Purposeproportion integral regulating valve zlva-3000 series actuator is straight route actuator, could be matched with zlvg-7000 series valve body, as to achieve regulation function on pipe medium flow. Widely applied to air condition and heating system, could be also matched with different connector and other valves.Specification on typezlva-3000floating type, built-in 24vac two-way reversible motor, accept switch type control signal, supply incremental control. Zlva-3100floating type, built-in 220vac two-way reversible motor, accept switch type control signal, supply incremental control.Zlva-3102intellectual type, accept and feedback 0-10v or 4-20ma control signal, supply proportion control characteristicslow ac pressure synchronous reversible motor, with function of hysteresis clutch protection. adopt small size route limit switch. inflaming retardant abs engineering plastic cover valve position indicator suitable for straight route regulating valve under 20mmno noise, with big output torque. easy installationspecification on intellectual debugginglong press key led1 light turns on, press again, led1 light flashes and enter into route automatic calibrating procedure; long press switch to positive reverse rotation. led2 light means positive rotation, led2 means 420ma current; long press switch to pressure-current input. led3 is 010vpressure, led3 is 420ma current; completion of wiring shall be indicated according to route, as to ensure valve complete accurate action according to given signal.

We are offering dynamic balance electric control valve. Summary dynamic balance electric control valve is a new generation products that different from traditional electric control valve, that collects dynamic balance and electric regulation together. As following figure shows, during the flow system with big fluctuation load, when the system pressure changes, the pressure difference (p1-p3) of dynamic balance control valve will always change. when the inlet pressure p1 ascends, (p1-p2) increases, the electric valve core moves upwards to reduce the opening between p1 and p2. The valve core pressure p2 reduces; when the inlet pressure p1 descends, (p1-p2) opening increases, valve core pressure p2 ascends. So regardless of changes of system pressure, p2 and p3 pressure difference still unchanged through the regulation of electric valve core. So the capacity of resisting disturbance is strong, with function of keeping dynamic balance. when the electric actuator receive the control signal to rotary the valve shaft to r direction, opening of p2 and p3 changes. So no matter how the pressure difference (p1-p3) changes, the pressure difference between p2 and p3 is still remain unchanged, so the position with any opening, the transport flow is constant, and the actual flow curve of electric regulating valve is same as the flow curve at any time, without any deviation, so it has better regulation characters than traditional electric control valve.Materialvalve body: nodular cast iron valve bushstainless steelshell of electric actuator: aluminum valve core: brass