On 29 Dec, 18:26, "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?

--
Dave - The Medway Handymanwww.medwayhandyman.co.uk

Go to a real merchant and ask for a "green" olive.Substitute this for
the one in your 22mm fitting.Cost pennies.
Mark.