wrote:

We have a flat which was originally plumbed with BS3505 plastic pipes.

I need to re-plumb a section which starts as the old BS3505 pipe and
ends with modern 15mm push fit. The re-plumbing will involve removing
the existing converter from old to new. As the BS3505 bits are glued
(solvent welded) I can't re-use the converter very easily.

You need to go to the best local Plumbers Merchant. Not BES or PTS
chains, an independent who has been there a long time.

It'll probably be a pipe from the early 70's when copper was in short
supply. The merchants will keep the couplings to fit to copper pipe.

There are 2 or 3 estates here in Leicester that have old plastic pipe
coming into the house, i have one of the convertors here, the OD of the
plastic is around 17mm. There is one of the local merchants who keep
these in stock, no-one else knows what they are (probably as the staff
were'nt born in the 70's). A place 10 miles away is unlikely to have
heard of them, as they didnt use the same pipe there.

Yours sounds very like the nickel plated steel pipe that was available
at the time too. This is just a bit smaller than both 3/4 and 22mm.

Alan.


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