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Draining a radiator

Posted: Sun May 20, 2007 10:45 am
by Royce
I'm trying to drain a radiator to remove it to decorate. I'v shut off the valves, and started to drain it. Hot water is starting to come into the radiator. The central heating is not on. Does this mean a faulty valve. Any help please.

Draining a radiator

Posted: Sun May 20, 2007 9:51 pm
by powerflushman
Hi, do you have a thermostatic valve on one side or are they both similar?, also which end is getting hot, or are both sides getting hot? :D

Posted: Mon May 21, 2007 11:50 am
by Royce
It's a thermostatic valve on one side. That's where the hot water is coming in. Heat moved right along rad.

Draining a radiator

Posted: Mon May 21, 2007 8:43 pm
by powerflushman
Yes you have a faulty valve, you will need to change it, either drain down the system, (safest way) flush out several times , change valve, please do not forget to put inhibitor back in.
Hope this helps.

Posted: Mon May 21, 2007 10:42 pm
by Royce
Thanks for your help

Posted: Wed May 23, 2007 7:55 pm
by htg engineer
with some Thermostatic rad valves, they will never turn off fully, you need the to take the head off and screw on the cap that was supplied with the valve to turn it off fully.