Thanks to you and others for this; the youtube video is helpful too.
I have temporarily stopped the leak by inserting a tap washer over the pin assembly and screwing the TRV head down tight. When the weather warms up a bit I'll try swapping in a new valve.
Poorly thought out gadget. How are you going to remove it from the pipe? Might be slightly easier if the pipe didn't go into one of the corner holes.
The corner holes have a split to allow fitting to pipes and for easy removal. I have two and found it easy to swap over as they fill by opening and closing the air vent you can control the draining.
It is made of soft material and slips off the pipe easily.
Regards
There's tools for replacing the valve inset on a rad under pressure.
Too expensive to buy -- go and rent one?
Thomas Prufer
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