A.Lee wrote:
The Medway Handyman wrote:

IIRC the old 1/2" copper pipe is so close to 15mm that new fittings
will go onto old pipes, but I'm not sure about the old 3/4" copper.

Will a 22mm compression fit or do I need an adaptor?

You need an adaptor for soldered, or for compression, get some
22mm-3/4 olives.
These can be used in normal 22mm compression fittings, but are fatter
at one end to allow 3/4 pipe to be sealed well in the larger 22mm
fitting. Only available at decent plumber merchants, 50p each iirc,
which seems a lot for an olive, but remarkably cheap compared to a
proper 22 to 3/4 compression fitting.


Cheers for the tip Alan, I've got a proper plumbers place nearby.


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk