Ductile Cast Iron Double Flanged Rubber Swing Check Valve Non Return Check valve
Ductile Cast Iron Double Flanged Swing Check Valve Non Return Check Valve. Nominal Diameter is DN50-DN600. Nominal Pressure includes PN10 and PN16. The material of check valve has Cast Iron、Ductile Iron、WCB、Rubber assembly、Stainless Steel and so on.
A check valve, non-return valve or one-way valve is a mechanical device, which normally allows fluid (liquid or gas) to flow through it in only one direction. Check valves are two-port valves, meaning 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. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, many check valves are very small, simple, and/or cheap. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of Ductile Cast Iron or WCB.