CB/T310-2008 Internal thread bronze check valve  

Check Valve refers to a valve that automatically opens and closes the valve disc according to the flow rate of the medium itself to prevent backflow of the medium. It is also called check valve, Duckbill Check Valve, counter flow valve and back pressure valve. Stop Check Valve is an automatic valve. The main function of the Cast Steel Globe Stop Check Valve is to prevent backflow of media, reverse rotation of pump and drive motor, and discharge of container media.