On 30/04/2012 21:03, Kevin Holohan wrote:
On 30/04/2012 02:20, John Rumm wrote:
On 29/04/2012 11:50, Kevin Holohan wrote:
One thing grohe have used is a rubber ring on the sealing plug which I
have removed to fit the coupler. Is this the way to go? If it is I can't
see anything suitable in either the screwfix or toolstation catalogues.
Any other pointers before I pay somebody with more experience than I to
fix my problem?
Shower photos:
https://picasaweb.google.com/kev.hol...eat=directlink
(http://bit.ly/IdKQvz if the above wrap is broken)
Coupling I'm using:
http://www.screwfix.com/p/male-coupl...equestid=86095
I assume its this one:
http://cdn08.grohe.com/lib/1/tpi/1375383.pdf
It looks like the main difficulty you will have is getting a parallel
threaded coupler to seal in a parallel socket. Usually these will have a
fibre or rubber O ring at that makes the final seal between the two flat
surfaces (the top of the socket, and the flange on the coupling) when
done up tight. If you have a rubber O ring hat came on the sealing plug,
then use that round the coupler.
You can get a seal on parallel threads with PTFE, but it takes a
surprisingly large amount of it.
Alternatively, use a taper fitting such as:
http://www.bes.co.uk/products/140.asp#6685
That will get a proper seal on the threads with PTFE (or Fernox LS-X)
I spoke to Grohe technical. They say I'm the first person to report this
issue and to just use more tape.
I'll get some taper fittings just in case. Should I be using tape with
that type of fitting (or non at all, or say the Fernox)?
Yes you must use a sealing compound or tape with a taper fitting.
What I can't quite follow is why you can't take the rubber o ring off
the blanking plug from your second photo, and stick that on the BSP
threaded end of your coupler? That would then give you a proper seal.
--
Cheers,
John.
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