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Discuss Compression fittings in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net

Matt0029

Gas Engineer
Messages
749
Have noticed my success rate with compression fittings fall over the last year or so. Am getting a few that weep. When I back to nut off to have a look the olive isn't over tighthed and I always clean the pipe first. Wondering if anyone else has noticed this whether it's just me or the quality of fittings has decreased. Have recently started using V2 plus on the olive. This seems to give a perfect joint all the time. But obviously adds time in as have to back the nut off after tightening to apply.
 
Messages
929
1. Forefinger with a little V2 wiped around the sharp edge of the fitting to leave a ring of V2.
2. Little finger with a little V2 wiped around the inside edge of the narrow end of the compression nut to give another small ring.
3. Do up fitting.
4. Wipe fingers.

I know the advice is "new fittings don't need anything" and on the whole I agree. However the economic and reputational cost of having to go back to fix a weep to my mind makes using V2 as a pre-emptive measure a winner. If all fittings were Conex or Pegler it would be a different story.
 

ShaunCorbs

Staff member
S. Mod
Plumber
Gas Engineer
Messages
28,433
Solutions
1
Compound the pipe first with the nut and olive on then give the olive a smear then tighten up but it’s down to crap fittings and tube these days you would be surprised how much the tube od varies
 

Matt0029

Gas Engineer
Messages
749
Compound the pipe first with the nut and olive on then give the olive a smear then tighten up but it’s down to crap fittings and tube these days you would be surprised how much the tube od varies
Thanks have definitely noticed having more of a problem with them recently.
 

Undertrained

Plumber
Gas Engineer
Messages
572
Had a few leak, even after swapping olives out, even had one carry on after ptfe, was a bad day then, ready to jack the job in (but that’s a different story), so could have been as Shaun says, diameter of tube.
 

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