Hayward TBB1010CPEG 1-Inch Gray PVC TBB Series True Union Ball Valve with EPDM O-rings and Socket/Threaded End Connection TBB Series true union ball valve with EPDM O-rings Made of heavy wall plastic material Ball valves control flow for an On/Off application Features PTFE seat and stem blowout proof; easily automated and double O-ring stem seals Pipe measures 1-inch socket/threaded end connection; available in gray color