Isolation valves fitted in Aberdare and the Cynon Valley
Small valves added to the pipework feeding taps, the toilet and appliances, so one fitting can be worked on without draining the house.
How you know you need it
The last time anything needed doing, the whole supply had to be shut off and every tap run.
Why people put it off
Nobody asks for these, because nobody knows they exist until a plumber points at them.
What is involved
A valve on each supply where there is room to fit one. It is the job that makes every future job cheaper.