Listing ID #4350346
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Contact SupplierA check valve or non-return valve which normally allows to flow through it in only one direction.
Check valves are two-port valves, means they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Although they are available in a wide range of sizes and costs, Check valves work automatically and most are not controlled An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate.
A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow
The body is designed for strength to meet operating conditions, and contoured to minimize erosion and resistance to flow. The disc is opened and sustained in open position by the Velocity pressure of the fluid and closed by the force of gravity. Seating load and resultant tightness is aided by back pressure in the line. The body seat-ring is seal-welded to the body avoiding leakage in the path between the seat ring and the body. The seating surfaces are ground and lapped.
Chemicals, Fertilizers,Feed Water, Petroleum, Power Generation, Steel Industries and Effluent reatment Plants
Automatic/ Hydraulic Damper/ Counter Weights
Drain Plug & Bypass Arrangement
Material | Size Range | Construction | ANSI Class | Mfg Standard |
---|---|---|---|---|
Cast Carbon Steel/Cast Alloy Steel | 2” To 12” | Bolted Bonnet or Pressure Sealed | 150 # -600 # | BS 1868 API 6D |
Cast Stainless Steel | 2” To 12” | Bolted Bonnet or Pressure Sealed | 150 # -600 # | BS 1868 API 6D |
Bronze | 2” To 4” | Bolted Bonnet | 150 # -600 # | BS 1868 API 6D |