Joining 1\2" copper piping to 15mm copper piping

9 Nov 2007
Reaction score
United Kingdom

Quick question. Is it possible to connect 1\2" copper piping to 15mm copper piping using normal compression couplers ? Are there ones around that accomodate the different sizes on each side ? I only seem to be able to find 15mm to 15mm compression couplers.

If so, are they something very specialised or do most plumbers merchants have them ?

We have a length of old imperial sized piping in the loft that I need to replace hence the question.

Many thanks

Sponsored Links
15mm and 1/2 is pretty much the same, so 15mm will be fine.

however its 22mm and 3/4 that is not...!

as i found out when a plumber put a 22mm pushfit on a 3/4 pipe that was hidden under a tiled floor.

only took 8 months for it to leak..

Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local