Define which installation is actually being tested
A pressure test of a newly fitted branch line is not the same as checking an entire ageing house supply. We clarify whether the request relates to new hot and cold water pipework, a repaired section, an extension or commissioning documentation. Pipe type, jointing system and the pressure limits of connected fixtures affect the permissible procedure. Exposed pipework should be visually examined before testing, and the parties responsible for concealed building work need to agree when the test will be witnessed.

