In an earlier contribution to this discussion,
John Rumm wrote:


And also - many TRVs come with a plain plastic cap that you can
replace the TRV with. If you can find one (plumbers merchant may be
able to do you one if you have none knocking about) yo can take the
TRV head off and replace with the cap and then use that like a manual
valve - the more you screw it down the cooler the radiator will get -
screw it tight down and the rediator is turned off altogether.


Also, each radiator will hopefully have a lockshield valve at the opposite
end to the TRV. As a short term measure, you could partially close the
lockshield (it will require a small spanner or pair of pliers to turn the
shaft) to restrict the flow through the radiator which is currently too hot.
--
Cheers,
Set Square
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