Draining a radiator


Postby Royce » Sun May 20, 2007 9:45 am

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.
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Postby powerflushman » Sun May 20, 2007 8:51 pm

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
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Postby Royce » Mon May 21, 2007 10:50 am

It's a thermostatic valve on one side. That's where the hot water is coming in. Heat moved right along rad.
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Postby powerflushman » Mon May 21, 2007 7:43 pm

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.
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Postby Royce » Mon May 21, 2007 9:42 pm

Thanks for your help
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Postby htg engineer » Wed May 23, 2007 6:55 pm

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.
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