What Is a Swing Check Valve?

What is a swing check valve?

A swing check valve is mounted with a disc that swings on a hinge or shaft. The disc swings off the seat to allow forward flow and when the flow is stopped, the disc swings back onto the seat to block reverse flow. The weight of the disc and the return flow has an impact on the shut-off characteristics of the valve. 

What Is a Swing Check Valve Used For?

As stated before, a swing check valve is for when you want fluid traveling in only one direction. Another important detail about these valves is that they require no external power, which makes them ideal for a wide range of applications. They also let fluid pass through without slowing down the flow much when fully open. 

One of the most common uses of a swing check valve is the flapper valve in a flush-toilet mechanism. This allows water to enter from the bottom of the tank, but prevents it from draining out the same way. Swing check valves are the most common type of valve in water and wastewater pumping systems. In any situation where backflow could cause problems, swing check valves are the go-to. 

If you want to know about the most popular swing check valve, just click here, you will find it.