On 11/25/2016 6:32 PM, Tim Watts wrote:
On 25/11/16 18:20, Adam Funk wrote:
I need to fix a hot tap in a sink in a relative's house (either clean
out & replace the washer, or perhaps replace the tap) --- that's
fine. But there's no service valve for this tap, and she has a
combination boiler.

What's the correct procedure for turning off the flow of hot water
from the boiler in order to cut the pipe and put a service valve in?
Should there be a valve somewhere downstream of the boiler,

Unless there is a ballvalve isolator inline with the tap, there is no
standard valving - it's always house dependent.

or do I
turn off the main stopcock coming in?

Quite possibly.

Thanks.


Don't Combis normally have a tap on the DHW outlet? That said, turning
off the main at the inlet (or the stop tap) is all that is needed. It's
perfectly safe to leave the CH running with the mains stop tap turned off.