radiator

[fruitsalad]

one of the radiators in my bedroom stays hot even when its turned off at the valve, any ideas what could be wrong with it?

[sometimesit]

Sounds like you need a new valve fitted

[fruitsalad]

thanks for prompt reply sometimes

[terence7556]

is it a valve thats in reasonable condition? if so take off the head and you will see a small pin that i think is stuck and not moving when you select a number on the valve head. i have removed the pin in the past on a couple of valves and a small/tiny amount of water seeped out. i cleaned the pin which had crap on it and re inserted it into the valve, and that did the trick.cheaper than a replacement valve.
if you do have to purchase one you are looking at draining down so its worth trying this first

[Nottm_George]

If it's an old valve take the plastic top off and have a look at the valve if it is a flat head (simalar to a screwdriver head) then have a look inside the plastic knob to see if the flat bit as worn away the inside if so you might be able to get a replacement but it could mean a new valve.