Neelcon Steel Industries

Bhuleshwar, Mumbai, Maharashtra

Neelcon Steel offer a wide selection of Wafer Type Check Valves Stockist Mumbai (Maharashtra) India. Neelcon Steel Wholesale Various High Quality Wafer Type Check Valvesin all shapes and sizes and with any specifications that the clients, More then 1500 Clients in India, United States, Canada, United Kingdom, United Arab Emirates, Iran, Singapore, Saudi Arabia, South Korea, Indonesia, Malaysia, Italy, Thailand, Germany, Australia, Mexico, Taiwan, Turkey, Pakistan, Spain, France, Brazil, Vietnam, Netherlands, Japan, Philippines, Kuwait, Poland, Qatar, Oman, Egypt, Colombia, Argentina, Nigeria, Finland, Ireland, South Africa, Russia, Bangladesh, Israel, Hong Kong, Chile, Algeria, Romania

A butterfly valve is a shut-off valve with a relatively simple construction. In closed position, the disc blocks the valve bore while in open position, the disc is turned to allow flow. A quarter turn takes the valve from fully open to fully closed position, or opposite, and thus the butterfly valve allows for quick opening and closure.

Butterfly valves can be used for a broad range of applications within water supply, wastewater treatment, fire protection and gas supply, in the chemical and oil industries, in fuel handling systems, power generation etc. Some of the advantages for this type of valve are the simple construction not taking up too much space, and the light weight and lower cost compared to other valve designs.

The valves can be operated by handles, gears or actuators according to any specific need.

The butterfly valve consists of only four main components: body, disk, stem and seat.

Butterfly valve body:Butterfly valves generally have bodies that fit between two pipe flanges, the most common being lug and wafer body design.

Butterfly valve disk:The disk is how the valve stops flow it is equivalent to a plug in a plug valve, a gate in a gate valve or a ball in a ball valve. There are variations in disk design and orientation in order to improve flow, sealing and/or operating torque.

Butterfly valve Stem:The stem of the butterfly valve may be a one-piece shaft or a two-piece (split-stem) design. The stem in most resilient seated designs is protected from the media, thus allowing an efficient selection of material with respect to cost and mechanical properties.

Butterfly valve Seat:The seat of a resilient-seat butterfly valve utilises an interference fit between the disk edge and the seat to provide shutoff. The material of the seat can be made from many different elastomers or polymers. The seat may be bonded to the body or it may be pressed or locked in.

A 90 rotation of the handle provides a complete closure or opening of the valve. LargeButterfly valvesare usually equipped with a so-called gearbox, where the handwheel by gears is connected to the stem. This simplifies the operation of the valve, but at the expense of speed.

Butterfly valvesrequire less material due to their design. The most economical is the wafer type that fits between two pipeline flanges. Another type, the lug wafer design, is held in place between two pipe flanges by bolts that join the two flanges and pass through holes in the valves outer casing. Furthermore, commonButterfly Valves materialsare often less expensive.

This is due to their compact design which requires considerably less space, compared to other valves.

Neelcon Steel offer a wide selection of Swing Check Valve Stockist Mumbai (Maharashtra) India. Neelcon Steel Wholesale Various High Quality Swing Check Valvein all shapes and sizes and with any specifications that the clients, More then 1500 Clients in India, United States, Canada, United Kingdom, United Arab Emirates, Iran, Singapore, Saudi Arabia, South Korea, Indonesia, Malaysia, Italy, Thailand, Germany, Australia, Mexico, Taiwan, Turkey, Pakistan, Spain, France, Brazil, Vietnam, Netherlands, Japan, Philippines, Kuwait, Poland, Qatar, Oman, Egypt, Colombia, Argentina, Nigeria, Finland, Ireland, South Africa, Russia, Bangladesh, Israel, Hong Kong, Chile, Algeria, Romania.

Globe valvesA Globe valves is a linear motion valve and are primarily designed to stop, start and regulate flow. The disk of a Globe valve can be totally removed from the flowpath or it can completely close the flowpath.

Conventional Globe valves may be used for isolation and throttling services. Although these valves exhibit slightly higher pressure drops than straight=through valves (e.g., gate, plug, ball, etc.), they may be used where the pressure drop through the valve is not a controlling factor.

Because the entire system pressure exerted on the disc is transferred to the valve stem, the practical size limit for these valves is NPS 12 (DN 300). Globe valves larger than NPS 12 (DN 300) are an exception rather than the rule. Larger valves would require that enormous forces be exerted on the stem to open or close the valve under pressure. Globe valves in sizes up to NPS 48 (DN 1200) have been manufactured and used.

Globe valves are extensively employed to control flow. The range of flow control, pressure drop, and duty must be considered in the design of the valve to avert premature failure and to assure satisfactory service. Valves subjected to high-differential pressure-throttling service require specially designed valve trim.

Generally the maximum differential pressure across the valve disc should not exceed 20 percent of the maximum upstream pressure or 200 psi (1380 kPa), whichever is less. Valves with special trim may be designed for applications exceeding these differential pressure limits.

• BS 1873
• 2" to 24"
• ASME 150 to 2500

Salient Features:

• Body and Bonnet - Cast with uniform sections, precision machined.
• In-situ hard-faced body seat - Eliminates leakage path between seat ring and body.
• Guided plug-type disc, Free-floating stem-disc connection - Uniform seating.

Body designs of Globe valvesThere are three primary body designs for Globe valves, namely: Tee Pattern or Z-body, Angle Pattern and Wye Pattern or Y-body body.

TEE PATTERN GLOBE VALVE DESIGN is the most common body type, with a Z-shaped diaphragm. The horizontal setting of the seat allows the stem and disk to travel perpendicular to the horizontal line. This design has the lowest coefficient of flow and higher pressure drop. They are used in severe throttling services, such as in bypass lines around a control valve. Tee-pattern Globe valves may also be used in applications where pressure drop is not a concern and throttling is required.

Tee Pattern or Z-shaped Globe valve

ANGLE PATTERN GLOBE VALVES DESIGN is a modification of the basic Tee Pattern Globe valve. The ends of this Globe valve are at an angle of 90 degrees, and fluid flow occurs with a single 90 degrees turn. They have a slightly lower coefficient of flow than wye-pattern Globe valves. They are used in applications that have periods of pulsating flow because of their capability to handle the slugging effect of this type of flow.

Angle-body Globe valve

WYE PATTERN GLOBE VALVES DESIGN, is an alternative for the high pressure drop, inherent in Globe valves. Seat and stem are angled at approximately 45 degrees, what gives a straighter flowpath at full opening and offer the least resistance to flow. They can be cracked open for long periods without severe erosion. They are extensively used for throttling during seasonal or startup operations. They can be rod through to remove debris when used in drain lines that are normally closed.

PRODUCT :-Ball Valve, Cast Steel Globe Valve, Cast steel Gate Valve, Cast Steel Check Valves, Flush Bottom Valve, Butterfly Valve, Steam Traps, Pilot Operated Pressure, Reducing Valve, Safety Valve, Butterfly Valve, Saunders Diaphragm Valve, Strainers, Disc Check Valve, ISI / IBR Globe Valve, ISI / IBR Gate Valve, Globe Steam Stop Valve, SIGHT GLASS Cast Steel Globe Valve, Ball Valve for Water, ETC.

304 SSl - 304H & 304L -One of the most widely used and oldest of the stainless steels. This was originally called 18-8 which stood for its chromium and nickel content. It possesses an excellent combination of strength and corrosion resistance

310 SS - 310H -The strength of this alloy is a combination of good strength and corrosion resistance in temperatures up to 2100 F

316 SS - 316L - is an austenitic stainless steel has an increased molybdenum content to increase its resistance to corrosion when compared to other 300 series alloys.

317 SS -317 is a high chromium, nickel and molybdenum version of 316 stainless designed principally for increased strength and corrosion resistance.

GATE VALVES ARE WIDELY USED FOR ALL TYPES OF APPLICATIONS AND ARE SUITABLE FOR BOTH ABOVE GROUND AND UNDERGROUNDINSTALLATION. NOT LEAST FOR UNDERGROUND INSTALLATIONS IT IS PARAMOUNT TO CHOOSE THE RIGHT TYPE OF VALVE TO AVOID HIGH REPLACEMENT COSTS. Gate valves are designed for fully open or fully closed service. They are installed in pipelines as isolating valves, and should not be used as control or regulating valves. Operation of a gate valve is performed doing an either clockwise to close (CTC) or clockwise to open (CTO) rotating motion of the stem. When operating the valve stem, the gate moves up- or downwards on the threaded part of the stem. Gate valves are often used when minimum pressure loss and a free bore is needed. When fully open, a typical gate valve has no obstruction in the flow path resulting in a very low pressure loss, and this design makes it possible to use a pipe-cleaning pig. A gate valve is a multiturn valve meaning that the operation of the valve is done by means of a threaded stem. As the valve has to turn multiple times to go from open to closed position, the slow operation also prevents water hammer effects. Gate valves can be used for a vast number of fluids. Neelcon's gate valves are suitable under the following working conditions:Potable water, wastewater and neutral liquids: temperature between -20 and +70 C, maximum 5 m/s flow velocity and up to 16 bar differential pressure.Gas: temperature between -20 and +60 C, maximum 20 m/s flow velocity and up to 16 bar differential pressure.

Gate valves can be divided into two main types: Parallel and wedge-shaped. The parallel gate valves use a flat gate between two parallel seats, and a popular type is the knife gate valve designed with a sharp edge on the bottom of the gate. The wedge-shaped gate valves use two inclined seats and a slightly mismatched inclined gate.

Agate valve, also known as a sluicevalve, is avalvewhich opens by lifting a round or rectangulargate/wedge out of the path of the fluid. Gate ValvesGate Valves are primarily designed to start or stop flow, and when a straight-line flow of fluid and minimum flow restriction are needed. In service, these valves generally are either fully open or fully closed.The disk of a gate valve is completely removed when the valve is fully open; the disk is fully drawn up into the valve bonnet. This leaves an opening for flow through the valve at the same inside diameter as the pipe system in which the valve is installed.

Advantages of using gate valves:Good shutoff featuresGate Valves are bidirectional and therefore they can be used in two directionsPressure loss through the valve is minimalThe major drawbacks to the use of a gate valve are:They can not be quickly opened or closedGate Valves are not suitable for regulate or throttle flowThey are sensitive to vibration in the open state