Check Valve

A check valve is a passive fluid flow control device that allows fluid to flow in only one direction. 1 It prevents backflow by automatically closing when the flow reverses. Common types include swing, ball, and lift check valves, each with varying mechanisms for opening and closing. Check valves are essential in various applications, such as plumbing systems, water supply lines, and industrial processes, to protect equipment and prevent fluid from flowing in the wrong direction. 4

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