Set Square wrote:

If you want to use solder fittings to join 22mm and 3/4" pipe, you need
special fittings whose two ends are a slightly different size. Again, you
can get them from a PM - or probably on-line from the likes of BES.

Or if needs must, run a pipe cutter round a 22mm fitting once or
twice... not enough to cut into it, but enough to put a dent into the
circumferance and reduce the diameter enough to solder it! (DAMHIK)

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/