Lockshield valves

[wiliamsj]

I'm trying to remove a radiator to decorate the wall behind. The lockshield valve, however looks strange. Under the cover is a hollow domed nut, with a screw inside it. When I loosen the nut, water flows from its seating. If I turn the screw (only possible when the nut is loosened), I cannot cut off the water. No matter what I do, I can' t seem to isolate the radiator. Can anyone help?

Cheers

 

[breezer]

you turn the valve at the other end too, and the lock shield end you turn the shaft, nit the nut (you may need to loosen the nut SLIGHTLY)

 

[wiliamsj]

Thanks breezer - the thermostatic valve needle on the other end of the radiator had stuck open. A gentle tap with a hammer and a bit of WD40 loosened it and all was then OK. Thanks for the pointer.

Cheers