U.S. Plastic Corp. offers TBZ Series true union and 3" TBZ Series CPVC threaded-end ball valves. TBZ Series "Z-Ball" true union ball valves come in sizes ranging from 1/2" to 6", they have double O-ring stem seals, and a variety of sodium hypochlorite applications. These valves feature a CPVC/PVC construction, reversible PTFE seats, adjustable seat retainers, and a full port design. They can handle pressure ratings ranging from 150 to 250 PSI and are available with flanged, threaded, or socket end connections.