"Ken Adam" wrote in message
...

What sort of fitting can I use to connect to the 3/4 brass pipe?

You can get 3/4 olives., e.g BES 9055 which **may** be okay in a 22mm
fitting, or a special compression imperial-metric adapter e.g BES 7826 at

http://www.bes.ltd.uk/products/141.asp