Butterfly Check Valve

Butterfly check valve is a device used to prevent the backflow of media.

Butterfly check valve refers to a valve that relies on the flow of the medium itself to automatically open and close the valve disc to prevent the backflow of the medium. It is also called a check valve, one-way valve, reverse flow valve, and back pressure valve. The check valve is an automatic valve whose main function is to prevent the backflow of the medium, the reverse rotation of the pump and drive motor, and the release of the container medium. Check valves may also be used on lines supplying auxiliary systems where the pressure may rise above the system pressure. Check valves can be mainly divided into swing check valves (rotating according to the center of gravity), lift check valves (moving along the axis), and butterfly check valves (rotating along the center).

The following matters should be paid attention to when installing the check valve:

1. Do not allow the check valve to bear weight in the pipeline. Large check valves should be supported independently so that they are not affected by the pressure generated by the pipeline system.

2. When installing, note that the direction of medium flow should be consistent with the direction of the arrow on the valve body.

3. The lift-type vertical flap check valve should be installed on the vertical pipeline.

4. Lift-type horizontal flap check valve should be installed on horizontal pipelines.

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