Hayward series TB true union ball valves are offered in PVC 1/4" to 6" sizes, CPVC 1/2" to 6" sizes and glass filled polypropylene in 1/2" to 2" sizes. Series TB carries the industries' highest pressure rating of 235 psi in sizes 1/4" to 4" and their full port design allows for greater flow rates and higher Cv values. PVC and CPVC valves are NSF/ANSI 61 Listed. O-rings are either FPM or EPDM and the seats are reversible/reusable PTFE. Options for TB series valves include: lockouts, 2" square operating nut, stem extensions, pneumatic and electric actuators and a spring return handle. TB series valves are ideal for the following applications: Water/wastewater treatment, Chemical Processing, Food/Beverage, Swimming pools/water parks, Aquaculture, Aquarium/zoo service, Pharmaceutical, Pulp/paper, Landfill service, Marine/corrosive environments, Metal finishing/plating.