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True Union Ball Valves

Colonial True Union Ball Valves - Full Block II
  • True Union Ball Valves   1/2" - 4"        PVC, CPVC
  • True Union Ball Valves   1/2" - 2"        polypro, PVDF

Outstanding Features:

  • Safety locking ring supports Teflon seat and prevents seal carrier blow out even if valve is disassembled under pressure.
  • PVC and CPVC valves up to 2" include both socket and threaded end connectors.
  • Full port design - same as inside ID of Schedule 80 pipe
  • Valve seat adjustment when valve is in service - That is the time when you notice that adjustment is necessary.
  • Two stem O-rings for additional leak protection - EPDM or Viton
  • Pressure rated up to 235 PSI @ 73 F.
  • Double D stem design
  • Valve seal kit are available to repair if necessary - Union allows for quick changes.
  • Electric and Pneumatic actuators are available and can be factory or field installed.


All thermoplastic true union ball valves (╝" through 6") shall be produced of PVC type I, cell classification 12454-B or CPVC type IV, cell classification 23447-B or PP or PVDF material. Valve o-rings shall be made of EPDM Santoprene« or Viton« material. The valve stem shall have two o-rings. The valve body shall have two stem stops. The valve carrier shall have a full block polymeric locking strip. Valve seats shall be Teflon« material. Valves shall be operated by a handle or pneumatically or electrically by actuator. Valves shall be capable of being field retrofit with pneumatic or electric actuator. Valves shall be full port (equal to or greater than the minimum inside diameter of sch 80 pipe). End connectors shall be of socket, thread or flange type. Valves shall meet or exceed the European DIN 3441 standard for pressure rating. Valves shall be capable if being adjusted externally for seat wear.

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