You can buy PTFE tape marked as suitable for gas. However, I was told by a corgi registered plumber that it should not be used for gas! They reckoned you should use gas jointing paste only. Any views on this?

"t60" wrote in message
...

You can buy PTFE tape marked as suitable for gas. However, I was told by
a corgi registered plumber that it should not be used for gas! They
reckoned you should use gas jointing paste only. Any views on this?

t60


I've heard of PTFE being used on copper compresion fittings, and joint paste
on malleable iron fittings, so I think both are acceptable in their own
ways. Joint paste is the way to go though, but only if you know you're
applying it properly.

BigWallop wrote:
"t60" wrote in message
...

You can buy PTFE tape marked as suitable for gas. However, I was
told by a corgi registered plumber that it should not be used for
gas! They reckoned you should use gas jointing paste only. Any
views on this?

t60


I've heard of PTFE being used on copper compresion fittings, and
joint paste on malleable iron fittings, so I think both are
acceptable in their own ways. Joint paste is the way to go though,
but only if you know you're applying it properly.

PTFE for gas is acceptable for pipework upto 2" and can be used on pipework
upto 4" if checked with manufacturer on lower pressure gas (21mb). We use
it all the time on pipe upto 2" but then use hemp/paste on larger diameter
pipework.

Lee




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On Wed, 11 May 2005 14:12:57 +0100, t60 wrote:


You can buy PTFE tape marked as suitable for gas. However, I was told by
a corgi registered plumber that it should not be used for gas! They
reckoned you should use gas jointing paste only. Any views on this?

Ordinary tape should should not be used for gas.
See FAQ.

--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html

Lee wrote:

PTFE for gas is acceptable for pipework upto 2" and can be used on
pipework
upto 4" if checked with manufacturer on lower pressure gas (21mb). We use
it all the time on pipe upto 2" but then use hemp/paste on larger diameter
pipework.

I thought hemp & paste was now only permitted on long screws?

John Stumbles wrote:
Lee wrote:

PTFE for gas is acceptable for pipework upto 2" and can be used on
pipework
upto 4" if checked with manufacturer on lower pressure gas (21mb).
We use it all the time on pipe upto 2" but then use hemp/paste on
larger diameter pipework.

I thought hemp & paste was now only permitted on long screws?

From what i have been told (before my time!!) it was ok to use, then
banned, now ok to use again, has been for a few years now i think.
Long screw.....sod that, use a union, much easier!! ;o)

Lee




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