I recently bought some 10mm copper tube from COP10/10/BARE 1 15.67 Coil Plain Copper Tube 10mm x 10mHowever I'm finding it *very* difficult to make good compressionfitted joints with it. I've not had any problems at all with someolder 10mm pipe I have (existing installation) and nor do I ever haveany problems with larger sizes. I've made many, many compressionfitted joints over the years and I've never had as much hassle as I'vehad with this particular pipe.On disassembly (of leaking joints) the olives have deformedconsiderable and dug into the pipe. Normally when I take mycompression fittings apart it's possible to remove the olives (with abit of persuasion) but with this pipe there's absolutely no chance ofdoing this.How do I make sure that any further 10mm copper I buy is stiff/hardenough to take compression fittings well?

Sounds like you are dong them up too much for this pipe if the olives are that deformed - are you sure it is the pipe, and not the olives that are at fault here?

Is it common for copper pipe to be too soft for compression fittings?

Nov 12, 2012 21 Replies

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fred 13 years ago

In article , snipped-for-privacy@ntlworld.com writes

News to me, ta, I've only soldered it before.

It looks like the 19949 is the code for 15mm, 18463 for 10mm:

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Quietly, I am convert to John Guest although I recall it can not be used for some

Likewise, nice long pipe runs so fewer joints, aaaand you can use compression on them too, cheap as chips.

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Onetap 13 years ago

True, but expands a lot more than copper and sags; it looks utter s*it if exposed. And mice like to gnaw it.

It's other big advantage is that it has no scrap value and the pikies won't nick it, so it's useful in certain building types..

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