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A check valve, including swing type check valve,piston type check valve,axial check valve is a valve that 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 work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem.There are various types of check valve used in a wide variety of applications. Check valves are often used with some types of pumps, and many fluid systems such as those in chemical and power plants, and also are often used when multiple gases are mixed into one gas stream, and used in domestic heating systems to prevent vertical convection, especially in combination with solar thermal installations, also are called gravity brakes.As a leading check valves manufacturer and check valves supplier from China, we only fabricate and supply the highest quality check valves in full range types as bellows: According to the structure, check valve can be divided into three types: Lift Check Valve, Swing Check Valve, Butterfly Check Valve. According to materials, check valve is divided into cast iron check valve, brass check valve, stainless steel check valve, carbon steel check valve and forged steel check valve. According to connection, check valve is divided into threaded check valve, flanged check valve and welded check valve. If there is a check valve you have question on, or if you do not see a check valve that meets your specifications, please contact us for our swing type check valve,piston type check valve,axial check valve.

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