1216020 - 2" True Union In-line Ball Check Valve - CPVC, Socket/Threaded, EPDM Seal2" CPVC EPDM SOC THR TU BALL CHECK VALVE ASAHI Features and Benefits Socket Threaded Combo Uniseat seal of EPDM or FKM Ball is the only moving part. It unseats to permit flow in one direction but seals against seat to prevent backflow. May be used vertically or horizontally Minimum shut off of 5 psi All sizes rated for full vacuum service Solid thermoplastic ball Material: PVC, EPDM, FKM Materials : PVC, EPDM & FKM DASAH00428