Olives from radiator valve stuck on pipe

27 Dec 2013
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United Kingdom
I've removed some radiator valves in order to replace with TRVs, and on all of them the olives were stuck fast, and I had to use a junior hack saw to weaken and then pry them off.

The pipe underneath where the olives were is slightly dented all around however - as if it had been tightened so much it crushed the pipe. I suspect that I should cut the pipe off below this before putting the new valves, but this will mean the hassle of lowering the radiator. Is there any alternative?
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You should have been able to replace the TRVs straight onto the fittings without needing to do all that. I certainly did when I fitted my TRVs.

You might get away with fitting new valves and olives and using lots of PTFE tape. If not, I'd be tempted to get a mini pipe cutter and remove the compressed bits of pipe and either try pulling some pipe up into place or use a straight coupler and add a couple of inches of fresh pipe, if space permits.
PTFE tape on the olive, overlapping onto the copper pipe, makes a very good seal. You have to make sure the olive is fully seated in the right place before you tape it.
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