A check valve is a valve that automatically prevents the medium from flowing back with the help of the medium force. A check valve is also called a one-way valve, non-return valve or back pressure valve. It opens when the medium flows forward and closes when the medium flows back. The function of a check valve is to prevent the medium from flowing back after the pump in the pipeline system stops running, prevent the pump and the drive motor from reversing and the container medium from leaking, and protect the safe operation of pipeline accessories.
