True Union Ball Check Valves

True Union Ball Check Valves Prevent reversal of flow in piping systems to protect pumps, filters and other process equipment with true union ball check valves manufactured from PVC, Corxan, CPVC and PPL. Line pressure moves the solid plastic ball off the elastomer seat, opening the valve. The back pressure seals the ball against the seat when the inlet flow stops. True union design enables easy installation and removal from piping system. FPM and EPDM seals, works in any direction expect downflow, optional foot valve screens can be added for pump priming.