SWING TYPE CHECK VALVE - FLANGED END

A swing check valve is check valve in which the disc, the movable part to block the flow, A swing check valve consists of a flap or disc which hangs down in the flow path. With flow in the forwards direction, the pressure of the fluid forces the disc to swing upwards, allowing flow through the valve. Reverse flow will cause the disc to shut against the seat and stop the fluid going back down the pipe. In the absence of flow, the weight of the flap is responsible for the closure of the valve, Distortion, wear and noisy operation of the valve can be avoided by selecting the size of the valve on the basis of flow conditions. Swing Check valves are best suited for moderate velocity operations. Swing check valves are normally designed for horizontal installations.