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Help CenterCarbon Steel Single Disc Wafer Swing Check Valve
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Wafer SWING Check Valve
Nominal diameter: 2"-12" (DN50-DN300)
Nominal pressure: 125lbs-150lbs
Working temperature: -15~+150°C
Suitable medium: steam, sewage, fresh water and oil
Face to face: ANSI, DIN
Material: SS304, SS316, WCB, LCB
Check valve are generally used in drip irrigation emitters and irrigation sprinklers. Composition disc valves
are ideal for applications involving gritty liquids. A clapper valve is a type of check valve which is used in fire
fighting. Poppet check valves find use in “macro” flow applications. Arterial check valves are used in
applications requiring centrifugal pumps to prevent retrograde flow along the arterial line. Check Valves are
mechanical valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. They are
classified as one-way directional valves. Fluid flow in the desired direction opens the valve, while backflow forces the valve
closed. The mechanics of check valve operation are not complicated. Most check valves contain a ball that sits freely above the
seat, which has only one through hole. The ball has a slightly larger diameter than that of the through hole. When the pressure
behind the seat exceeds that above the ball, liquid is allowed to flow through the valve. But once the pressure above the ball
exceeds the pressure below the seat, the ball returns to rest in the seat, forming a seal that prevents backflow.
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