You will need to understand your:

  • water system
  • associated equipment, and
  • be familiar with its constituent parts, such as:
Two dead end pipes extruding from a wall
Dead/blind end – a redundant length of pipe, closed at one end, through which water cannot flow.
Thermostatic Mixer Valve
Thermostatic Mixer Valves (TMVs) – these blend hot and cold water to reduce the temperature where a scald risk is present.
Pipe with multiple outlets, highlighting first and last outlet
Sentinel outlets – the nearest and furthest/last outlets from hot and cold water cylinders and tanks.
Dead leg pipe highlighted in a pipework schematic drawing
Dead leg – a pipe leading to an outlet through which water flows but the outlet is unused/rarely used.

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Updated 2021-02-19