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Check Valve
May 24, 2017

Check valve refers to the flow of the media itself and automatically open, close the disc, used to prevent the backflow of the valve, also known as the reverse valve, check valves, countercurrent valve, and back pressure valve. Check valve belongs to an automatic valve, its main role is to prevent the backflow of the media, prevent the pump and drive motor reversal, as well as the container media release.

Classification

The headstock is turned on or off by the force of the medium flow to prevent the backflow of the valve from being called check valve. Check valve belongs to the automatic valve class, mainly used in the medium one-way flow of the pipeline, only to allow the medium flow in a direction to prevent accidents.

Check valve by structure, can be divided into lift check valve, swing check valve and butterfly check valve three kinds:

1. Lift check valve is divided into vertical and horizontal type.

2. The Swing check valve is divided into single, double and multiple-type three.

3. Butterfly Check valve is straight-through.

The above several check valve in the connection form may divide into the threaded connection, the flange connection, the welding connection and the clamp connection four kinds.