On 07/12/2019 13:21, Tricky Dicky wrote:
I have used this in the past when moving radiators round but never on a pressurised system. I need to alter the pipe work for the new kickspace heater and just need the pipes blocked long enough to cut the existing pipes and fit a couple of full bore isolating valves. So any gotchas?

Richard


I've used a freezing kit on a live mains water pipe. It worked
absolutely fine. Obviously, you need zero water flow.

Does the inhibitor in a central heating system reduce the freezing point?