Imperial compression fitting

If there is enough of a pipe stub, then cut off close to the olive, otherwise, carefully remove the olive (using an olive puller or by slitting not quite through with a Dremel and then twisting open with a screwdriver in the slot). Remove the nut. You can then use a brand-new

SteveW

This do?

Is there room to cut the 3/4" copper pipe behind the olive and use a

Alternatively, get the brass fitting off the steel pipe (you can cautiously saw the brass obliquely to the thread as long as you don't get to the steel and this will weaken it enough to split it as you turn it. Open it a bit with a screwdriver (old!) twisted in the cut if necessary. Then clean up the steel thread and get a very standard female 3/4" to 22mm compression connector fitting. (If the steel pipe is not 3/4" then the relevant adapter is probably still available 7/8" is rare but 1" is common.) The end of the pipe will almost certainly be a taper thread. In the unlikely event it isn't getting a brass female taper thread adapter is not impossible. You want at least one of them to be tapered so you can seal the thread. I'd just use PTFE tap at

Possibly they used jointing compound on it. Try a bit of heat from blow-torch which may/will soften the compound or provide some expansion to free the connection.

Thanks, Steve. I think this will work. I've done similar in the past. I was fixated on the idea that the right type of fitting was out there somewhere and I just had to track it down! :)

The other ideas are all good, also, thanks. Except for the link to ebay. That's a male BSP. It won't work as there's nowhere for the bit of copper pipe to go (and I think the thread is the wrong size, but not certain).

That will be because I posted the wrong link. :-{ It should have been

My initial reaction was great, that's just what I need.

Then I read "please note that both nuts will say 22mm, which is the thread that they are screwed on."

He's just selling a 22mm coupler with a 3/4" olive at an inflated price!

The sneaky git.