ERA Sch 80 PVC 1-1/2 Inch True Union Ball Check Valve, Socket Connection

ERA SCH 80 PVC TRUE UNION BALL CHECK VALVE - SOCKET Schedule 80 ball check valves have a spherical ball inside the valve body which works as a check to allow flow in one direction and close off to prevent back-flow. These only have a ball, no spring, so must be used in an upflow position to work properly.Unless specifically indicated, PVC is not NSF certified. Materials: Body: PVC Ball: PVC End: PVC O-Ring: EPDM Seat Seal: EPDM