- The function of the check valve: prevent the medium from flowing backward, prevent the pump and the drive motor from reversing, and release the container medium.
- The check valve refers to a valve that automatically opens and closes the valve flap by means of the flow of the medium itself, and is used to prevent the back flow of the medium, also called a check valve, a check valve, a reverse flow valve, and a back pressure valve. The check valve is an automatic valve.
- The check valve is divided into three types according to the structure: the lift check valve, the swing check valve and the butterfly check valve:
Lift check valves are available in both vertical and horizontal versions.
The swing check valve is divided into three types: single-lobed, double-lobed, and multi-lobed.
The butterfly check valve is straight-through.
The above several check valves can be divided into four types: threaded connection, flanged connection, welded connection and clamped connection.
4, check valve installation (Check Valve) should pay attention to the following matters
A. Do not allow the check valve to bear weight in the pipeline. The large check valve should be independently supported so as not to be affected by the pressure generated by the piping system.
B. Pay attention to the direction of media flow when installing. It should be consistent with the direction of the arrow marked on the valve body.
C. The lift vertical flap check valve should be installed on the vertical pipe.
D. The lift horizontal flap check valve should be installed on the horizontal pipe.