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Cold Water

Exam revision materials for Plumbing Level 2&3 and ACS Gas Safety test

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Cold Water Storage Cistern

Parts and Components


cold water storage cistern components

  • MIN Ø19mm
  • Open Vent Termination = 150mm + 40 x System Height (base of the cylinder to water level of CWSC)
  • Termination point is MIN of vent pipe above the top of FOV
Float-operated Valve

Service Valves
  • Should be fitted on inlet and outlet pipes
Close Fitting Lid
  • should be not airtight
  • should exclude light
Hot Water Cylinder Distribution Pipe
  • MIN 22mm
  • Should NOT supply any other appliances
  • Quarter Turn Lever Operated Service Valve - MUST be fitted close to the cylinder on a verical pipe run
  • Positoned 25mm above the Cold Water Outlet to avoid scalding
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