Check valve refers to the valve that automatically opens and closes the valve flap depending on the flow of the medium itself, and is used to prevent the medium from flowing backward. The check valve is an automatic valve, and its main function is to prevent the medium from flowing backward, to prevent the pump and the drive motor from reversing, and to release the container medium.
Check Valve: According to the structure, it can be divided into three types: lift check valve, swing check valve and butterfly check valve. Lift check valve can be divided into vertical and straight through two types. Swing check valve is divided into three types: single, double and multi-lobe. The butterfly check valve is divided into a butterfly double flap and a butterfly single flap. The above types of check valves can be divided into four types of screw connection, flange connection, welding and wafer connection.