Canplas Inc. has introduced a line of PVC True Union Ball Valves with EPDM seals. The new Canplas PVC True Union Ball Valve line is available in sizes ranging from 1/2-inch to 2 inches, and comes with both socket and threaded end connectors. All of the valves are NSF certified, with a pressure rating of 235 psi at 73 degrees F.Canplas Inc.