Cast Iron Flange Swing Check Valve

Flange check valve is to rely on the flow of the medium itself and automatically open and close the valve disc, to prevent the media flow back valve, also known as check valve, one-way valve, counter-flow valve, and back pressure valve. Check valve is a kind of automatic valve, its main function is to prevent media backflow, prevent pump and drive motor reverse, as well as the discharge of container medium. Check valves can also be used to supply lines in which pressure may rise to exceed system pressure in the auxiliary system. Check valves can be divided into swing check valves (rotating according to the center of gravity) and lifting check valves (moving along the axis).