PlumbRevise
scientific_principlesLesson Premium

Head, pressure and thermal expansion

The head/pressure rule of thumb and why heated water needs expansion provision.

A useful plumbing rule of thumb: roughly 1 bar of pressure for every 10 metres of vertical head of water. More head above an outlet means more static pressure at it.

Read the full Scientific Principles note with Premium

You’re reading the free preview. PlumbRevise Premium unlocks the complete write-up, the worked detail for every Scientific Principles note — plus timed tests on every module.

Plenty of modules are free to read in full.