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Since the check valve is qualitatively determined for quick closing in most practical applications, the medium is directional in the moment the check valve is closed, and the medium rapidly drops from a large reverse speed as the valve flap closes.

The valve flap of the swing check valve rotates around the rotating shaft. Its fluid resistance is generally smaller than that of the lift check valve, which is suitable for larger diameter applications.

Swing-type check valves are widely used in pipeline transportation such as petrochemical, pharmaceutical, and electric power. In these systems it is often necessary to transport some oil, steam, nitric acid, and highly oxidizing media.

The swing check valve function is to prevent the medium in the pipeline from flowing backward. The valve of the opening and closing part is opened or closed by the flow of the medium and the force to prevent the back flow of the medium from being called a check valve.

There are installation instruction for kinds of check valve,include swing check valve,lift check valve etc.

The check valve is an automatic valve whose main function is to prevent back flow of the medium, prevent the pump and drive motor from reversing, and discharge the container medium.

In our lives, I believe that everyone is no stranger to the check valve, perhaps because some factors are often seen by some people. Then the main function of the check valve is to prevent the back flow of the medium inside our pipeline. The following describes the check valve function in detail.

Check valve is a valve in which the opening and closing member is a circular valve flap and acts on its own weight and medium pressure to block the reverse flow of the medium. It is an automatic valve, also known as a check valve, non return valve or isolation valve.

Check valves are used to prevent back flow of media in pipes or equipment. It uses the kinetic energy of the fluid to turn it on. In heating systems, check valves are often installed at the pump outlet and where other fluids are not allowed to flow in the opposite direction.