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How Check Valve Works

Date:2022-01-08

Check Valves, also known as non-return, one-way, and clack valves, are different from other types of valves in their ability to pass fluid in solely one direction. This sort of function is essential for a variety of safety applications, as well as for preventing overflow.

How Check Valves Function


Operating on a two-port system, check valves have an opening where fluid or gas is drawn in to the first port. It is then regulated by a mechanism separating the two ports that allows water to be drawn from the first to the second port and out an opening without allowing fluids to reenter the first port.

Types of Check Valves


Ball Check Valve


This check valve uses a ball covering a round opening to separate the first and second port. When fluid is drawn in, the ball is pushed forward. When the fluid is pushed back, the ball is pressed into the round opening, which creates a seal and allows all fluid to flow out the second port in the intended direction.