2" CPVC TBH Series Ball Valve Socket or Threaded Ends - FPM SealsHayward TBH2200ASTV0000 2" CPVC TBH Series Ball Valve Socket or Threaded Ends FPM Seals The TBH Series features a low maintenance design with its new patent pending System2 Sealing Technology for sizes up to 2" DN50. Sizes 2 1 2" through 6" feature have energized PTFE seats with backing O ring as standard. All seats are reversible to allow easy field rebuild. Assisting users in protecting property and life, a standard integral lock out feature secures