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12 mm Stem Adaptor

12 mm Stem Adaptor

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12mm to 1/2" BSP stem adaptor. Can be used as a tank connection, to make a vent outlet or water outlet for a water tank.

Connects to most European caravan and motorhome fresh water plumbing where John Guest or similar fittings are used.


  • Connects to 12mm John Guest type pipe fitting
  • Push fit easy installation
  • Food grade suitable for drinking water
  • Working pressure, 0-230psi
  • Working Temperature 0-60°C
  • 1/2" BSP Male to 12mm push fit Male