Thanks for the reply Red_Man - when you say unscrew the top part of the TRV, do you mean the collar at its base (looks a bit like a hose clip with a screw through it) or should the bit that you normally twist to set the temp come apart from the rest of the valve?
Cheers
Ant
I'm looking for a little advice regarding removing some radiators for decorating. I have some patches of plaster coming away from the wall behind several rads that I want to repair. The heating system runs off a Vaillant combi boiler (don't have model no to hand at the mo).
I've looked up...