TRV problems with radiator removal

[jiimmy]

Hi I am trying to remove my radiator so I can decorate but also replace the radiator itself in the process. I attempted to drain down the radiator (closing off the valves at both ends etc) and it felt like I was nearly there but there was still a reasonable dribble of water. When closing off the valves I noticed that air then started coming out of the open bleed valve at the top (indicating to me that water was still going into the radiator?). I assume this is because the TRV depite being set to 0 is not actually closed. I took the top off the trv to reveal the central spindle as I have read elsewhere that putting in a coin and replacing the trv can force the valve to fully close but the spindle doesn't seem to move. I don't have the dust caps that apparently come with the trv when first bought as it was all put in by previous owners. Any thoughts?

 

[Agile]

Air will come out because its under pressure.

Its only water coming out which indicates the valve is leaking.

Your TRV pin may be jammed down or up.

A coin or other spacer might help.

Regardless, it sounds as if the TRV needs replacing.

When turning off rad valves its safest to add a sealing cap as well.

Tony

 

[Armo74]

Did the radiator work before?
If it did that would indicate that the pin should be working.

 

[jiimmy]

The radiator appeared to work fine before. Should the pin be easy to push down with just fingers?

 

[gigz]

Not really, depends which make. Press it down with pliers or similar, it should return to top