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Check Valve is the rely on the flow of the medium itself automatically open and close the valve, the valve is used to prevent the media back, also known as check valve, check valve, reflux valve, and back pressure valve. Check Valve is an automatic valve, and its main role is to prevent the media back, to prevent reverse pump and drive motor, and discharge the container media. Check the pressure of which can also be used to exceed the system pressure may rise to the auxiliary system supplies the pipeline. Check valve can be divided into swing check valve (center of gravity by rotation) and lift check valves (along the axis of movement).
The role of check valve only allowing media to flow in one direction, and stop the flow the opposite direction. Usually the valve is automatically work in a direction of flow of fluid under pressure, the valve flap to open; fluid flow the opposite direction from the fluid pressure and valve disc from the coincidence of the role of the valve seat to cut off the flow.

KOSEN VALVE is one of the professional Ball Valve Manufacturer in china.. We supplies: Cast Steel Check Valve, Forged Steel Check Valve, Flanged End Check Valve ,We can manufacture and supply Check Valve according to your requirements, please feel free to contact us!
main material of the products are A105, WCB, C5,WC6, WC9,CF8(304), CF8M(316), CF3M(316L), CF3(304L) and so on.
KOSEN Valve design standards API, ASTM, ANSI, JIS, DIN, BS, GB, etc.