I want to replace some unused and leaking joints on part of my gravity
heating system (I'll be draining it first). I will probably also replace
some of the gate valves when I am at it, as several of these are already
faulty. I've noticed that some of the compression fittings are marked
22mm, and others 3/4 inch. It's mostly copper pipes. I've had problems
mixing 22mm and 3/4" before, and wonder what is the correct way to
Can 3/4" olives be used with a 3/4" pipe in a 22mm fitting ?
Can a 22mm olive be used with a 22mm pipe in a 3/4" fitting ?
or do I need special conversion olives, which I have heard about but
haven't seen for sale.
One last question - is there any problem with replacing gate valves with
lever valves ?