Barefoot Andrew
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PTFE tape in compression joints?This is borne of the "it's Teflon, does it really make a good seal" issue. What do you do?
A.
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RichardW
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Realy needed three votes
1, new joint & new pipe or good condition used bits = no tape
2, old bits & old pipe = possibly use tape if
a, i think it might leak
or
b, its a pig to get to so deff dont want a leak
3, An existing joint has started to leak & a 1/4 to a 1/2 turn does not stop the leak = apply tape
Justme
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lettucewoman
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guess who voted for pricey does all my plumbing??? 
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Blacksmith
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Polytetrafluoroethane tape, is intended for threaded joints, on BSPT on ANPT. Parallel threaded cone or face sealing galvo unions or compression joints, are best sealed with liquid PTFE (Ras or similar) Depending on the medium in the pipe, Manganese foliac compound, Loctite "orange" sealant.
PTFE works on compression joints, but I don't use it. 
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vegplot
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I used but not any more. For large joints I use hemp. 
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James
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PTFE all the way. but I have in the past used hemp also. Its a damn site cheaper than PTFE. It swells slightly when wet to make a really good seal
| vegplot wrote: | | For large joints I use hemp |
remember what Cab said about these types of discussions.....
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vegplot
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| James wrote: | PTFE all the way. but I have in the past used hemp also. Its a damn site cheaper than PTFE. It swells slightly when wet to make a really good seal
| vegplot wrote: | | For large joints I use hemp |
remember what Cab said about these types of discussions..... |
Nowt wrong with Boss White 
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alison
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OH uses boss white, and definately not tape.
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RichardW
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Should have put that when I do use it its NOT on the threads as they dont make the seal. Its around the pipe & olive.
Justme
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Barefoot Andrew
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Ta to all for the replies.
A.
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vegplot
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| James wrote: | PTFE all the way. but I have in the past used hemp also. Its a damn site cheaper than PTFE. It swells slightly when wet to make a really good seal
| vegplot wrote: | | For large joints I use hemp |
remember what Cab said about these types of discussions..... |
Fortunately, I don't indulge.
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Blacksmith
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| vegplot wrote: | | James wrote: | PTFE all the way. but I have in the past used hemp also. Its a damn site cheaper than PTFE. It swells slightly when wet to make a really good seal
| vegplot wrote: | | For large joints I use hemp |
remember what Cab said about these types of discussions..... |
Nowt wrong with Boss White |
Yes there is.
Try and clean flange faces off a steam joint that some f***wit has used it on 
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vegplot
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| Blacksmith wrote: | Yes there is.
Try and clean flange faces off a steam joint that some f***wit has used it on |
I'll keep that in mind next time I'm working on flanged steam pipes
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sean
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It's a lesson for us all.
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Nick
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Can I vote for the new B&Q push fit fittings? REALLY simple and work. Almost certainly more expensive than any other method at a quid or so a connection, but for us occasional plumbers, they're brilliant. Take mains pressure, happily.
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vegplot
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| Nick wrote: | | Can I vote for the new B&Q push fit fittings? REALLY simple and work. Almost certainly more expensive than any other method at a quid or so a connection, but for us occasional plumbers, they're brilliant. Take mains pressure, happily. |
They're really good. I've converted to plastic pipe as well. So much easier but not applicable for all jobs.
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MarkS
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| Nick wrote: | | Can I vote for the new B&Q push fit fittings? REALLY simple and work. Almost certainly more expensive than any other method at a quid or so a connection, but for us occasional plumbers, they're brilliant. Take mains pressure, happily. |
until they don't.
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Blacksmith
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I have used "push-in" fittings on compressed air for years, very easy to use, very few leaks.
Bit different if its under the floor boars, dripping way.
Also had one push in joint fail catastrophically after a few months as there was no "o" ring in it  My fault I should have checked.
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crofter
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| vegplot wrote: |
They're really good. I've converted to plastic pipe as well. So much easier but not applicable for all jobs. |
My brother put a washing machine in his garage using plastic - all went well until a rat chewed through it
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Barefoot Andrew
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I've been tempted with the plastic pushfit ones before, but I'd think twice about using them on a mains-pressure job in someone else's house (i.e. one that I couldn't be on hand for quickly sorting).
A.
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