Where can I get whatever this olive is called?

[WaterTight]

Just had right mission trying to join on what I think must have been 15mm copper going into a imperial sized compression tee. On the pipe there was an olive that was compressed flat onto the pipe on the end that went into the fitting and raised and flat ended on the other side to seal against the nut which had a large gap around the pipe too large to be grabbed by a standard 15mm olive not matter how tight.

I've seen them before and heard them mentioned on here before but forgotten what I've heard themthey were called. And this was the first time I've really could have done with a new one as I didn't want to use the original one as pipe was a bit worse for wear.

What are these called? Can you buy them? And can they be used to help a 15mm copper pipe seal into an old fitting?

Thanks

 

[WaterTight]

Incidentally no 15mm nut I had would join onto the thread of the old fitting otherwise I'd have just done that.

 

[Last Plumber]

You are talking about a .'Cone'.

No I do not think you will get one. No the thread will not fit modern nuts. You probably need to re use it if you can or replace the fitting

 

[WaterTight]

Thanks, that's a shame. Would be handy for joining onto an old imperial compression fitting with new pipe.

I've noticed places like bes do 'imperial compression' ... Would this just be compression designed to fit well on imperial pipe rather than machined to have threads that would match/fit old imperial fittings?

 

[WaterTight]

Actually I think I'm still confused about what I was working wit. I don't think the fitting can have been imperial as my new metric pipe was too loose in it, whereas it should have been really hard to get the pipe in if it was imperial. I guess there were just metic fitting designed to take a coned olive, for whatever reason.

 

[Last Plumber]

Actually I think I'm still confused about what I was working wit. I don't think the fitting can have been imperial as my new metric pipe was too loose in it, whereas it should have been really hard to get the pipe in if it was imperial. I guess there were just metic fitting designed to take a coned olive, for whatever reason.

It would be imperial. 1/2" and 15mm Are near as damn it the same. You will find that 1/2" can be a tad tight in 15mm fittings though.

Ca you not replace the whole fitting?

 

[WaterTight]

Why is 1/2" tight in 15mm fittings when it is smaller? Is it because even though it's bore is 1/2" the wall was so much thicker then that it actually ends up the same o/d as 15mm or greater? If so that might explain why the speedfit attached to it for 2 years was happy as larry.

Replacing whole fittings means digging into wall.

 

[WaterTight]

I've also noticed that plenty of 15mm pipe is a struggle to get into plenty of 15mm fittings anyway these day presumably due to cheaper production.

 

[king of pipes]

I had one in the garage pm me your address i will post it to you. Cheers kop

 

[Last Plumber]

Why is 1/2" tight in 15mm fittings when it is smaller? Is it because even though it's bore is 1/2" the wall was so much thicker then that it actually ends up the same o/d as 15mm or greater? If so that might explain why the speedfit attached to it for 2 years was happy as larry.

Replacing whole fittings means digging into wall.

1/2” inside diameter gave (I think, don’t quote me), something like 15.8 mm. outside diameter. There about, roughly.