I'm fitting a TRV RAS-C2 with a 10mm reducer. How should I tighten things up? Does it require brute strength to seal it or is it treated like a normal olive?
Tightening what, the rad tail, compression fitting or reducer?
Is the reducer a compression fitting or what?
Methodology would be, remove the rad tail (if required) and replace with a couple of turns of PTFE tape. You should know when this is tightened adequately.
Then attach the valve and reducer loosely, then tighten radiator side and continue round to the reducer.
The valve is fitted now but when tightening up I didn't sense any 'snap' of the compression ring. The valve is working ok with no leaks so I'm happy with that.
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