PTFE on compression fittings?
- Thread starter lukechrissy
- Start date
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so
try brazing oxy lines with nitrogen flowing through
didn't get any leaks but a few people went a funny color afterwards
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Well, I still use Boss White on all compression joints as a matter of course and good practice. It's belt and braces and what's the harm ? It is also a sign of reliability, leaving nothing to chance. The proof is simple - never any leaks from joints
Last job I remember being on with pipe being purged with nitrogen was when I thought I'd have ago at being a trainee A/C fitter.
Jacked it in after a couple of weeks, I couldn't stand it and yearned to be back plumbing, which I soon was
Jacked it in after a couple of weeks, I couldn't stand it and yearned to be back plumbing, which I soon was
I'm just a keen diyer but my favourite method is to make the joint dry then take it apart and apply 3 or 4 turns of PTFE around the olive.
I've found that the joint always stays perfectly dry that way and you never get that slight leak that sometime occurs without it's use.
I've found that the joint always stays perfectly dry that way and you never get that slight leak that sometime occurs without it's use.
if it is new copper pipe with a new fitting and olive then no paste or tape...
but if you you are taking an old fitting apart, reusing the nut and olive then there is no way you can claim that you get a 100% leak proof joint with out tape or pasted.
but if you you are taking an old fitting apart, reusing the nut and olive then there is no way you can claim that you get a 100% leak proof joint with out tape or pasted.
I am surprised that no one else has mentioned it but I often put a little silicone grease on a 22 mm or larger compression joint nut.
This lubricates the thread and enables more pressure to be applied to the olive.
Its probably not needed on genuine British fittings if they are still available but it certainly helps on the cheap fittings on sale in most places.
Tony
This lubricates the thread and enables more pressure to be applied to the olive.
Its probably not needed on genuine British fittings if they are still available but it certainly helps on the cheap fittings on sale in most places.
Tony
I haven't yet heard a convincing argument for not using PTFE on the olive
In favour: It prevents leaks
Against: Some people don't like the look of it
My DIY plumbing is intended to be practical, not ornamental.
(must find my Duraglit for the copper pipes round the boiler)
It's belt and braces and what's the harm ? It is also a sign of reliability, leaving nothing to chance. The proof is simple - never any leaks from joints
In favour: It prevents leaks
Against: Some people don't like the look of it
My DIY plumbing is intended to be practical, not ornamental.
(must find my Duraglit for the copper pipes round the boiler)
It's belt and braces and what's the harm ? It is also a sign of reliability, leaving nothing to chance. The proof is simple - never any leaks from joints
it's just a sign of not being competent of your own work.
If a compression fitting and a job is installed to British Standards you do not need PTFE tape or anything. Says so in the standard.
If you wish to do a non-standard job or use non-standard fittings that's up to you.
If you must use tape the number of winds depends also on the tape you're using; there's gas tape and there's crap tape.
Having said that, if I'm using a fitting or olive again I paste or tape 'em and also it might depend if they're brass or copper olives and what charlie has been at them before. Same if you're tightening a 22mm copper olive on 3/4" tube if you're stuck.
John, when you're not waxing bikinis (I thought the idea was you waxed the client's pubic hairs not their swimwear (I think you should give up your day job)) who gives a toss what you do to your own plumbing? I just have an image of someone coming to your studio and stripping off in front of you while you're bent over a table stirring or mixing vigorously whatever it is you use while wearing your belt and braces - hmmmm, nice!
Top of the trousers at the armpit and cuffs three inches above shoes.
I'm sure you present the very epitome of reliability and leaving nothing to chance to your clients.
If you wish to do a non-standard job or use non-standard fittings that's up to you.
If you must use tape the number of winds depends also on the tape you're using; there's gas tape and there's crap tape.
Having said that, if I'm using a fitting or olive again I paste or tape 'em and also it might depend if they're brass or copper olives and what charlie has been at them before. Same if you're tightening a 22mm copper olive on 3/4" tube if you're stuck.
John, when you're not waxing bikinis (I thought the idea was you waxed the client's pubic hairs not their swimwear (I think you should give up your day job)) who gives a toss what you do to your own plumbing? I just have an image of someone coming to your studio and stripping off in front of you while you're bent over a table stirring or mixing vigorously whatever it is you use while wearing your belt and braces - hmmmm, nice!
Top of the trousers at the armpit and cuffs three inches above shoes.
I'm sure you present the very epitome of reliability and leaving nothing to chance to your clients.
he he, this is why the internet is great, 4 pages of debate on some technicality!
Seems like the summary is:
No - if you do the job properly first time.
Yes - if it won't stop leaking due to age/initial poor fitting and you can't replace.
Seems like the summary is:
No - if you do the job properly first time.
Yes - if it won't stop leaking due to age/initial poor fitting and you can't replace.
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