Imperial to metric olive - Which way?

[Best]

Thanks. I know what you mean. It’s on the top floor too!

I avoid working in flats now. Existing work can be old or just badly done and I don’t want to risk my reputation on other people’s work that could flood several flats.

 

[Burger]

Really? Ok. Thanks. I’ll try a couple out once I’ve taken the old stopcock off. It’s in a block of flats that was probably built in the 60s/70s. Just out of interest, are you aware of the tapered/chamfered (one one side) olives that I’m referring to? Logic would suggest that the 2 matching edges (ie 22mm edge into the 22mm stopcock fitting) go together despite this being the opposite way we use rubber tapered washers in plastic compression waste fittings.

Yes I knew what you were referring to, I was just replying but realised the time and decided to go home. Yes the tapered edge into the fitting so the 22mm seals at 22 end of nut fitting.

 

[Burger]

If the copper is 1/2” in the flat. A new stop tap will not fit as it will be 15mm

Are you saying the black pipe will be 1/2”?

 

[Harvest Fields]

I know. I’ll be reducing from 22mm to 15mm to connect to the 1/2 inch copper.

15mm copper will not connect straight to 1/2” copper. You will need an old to new connector.

 

[Harvest Fields]

Are you saying the black pipe will be 1/2”?

No

 

[Marcus Jones]

Are you saying the black pipe will be 1/2”?

The black pipe is the incoming mains which then reduces down to either 15mm or 1/2 inch copper. Having mulled all this over, I’m considering abandoning the replacement of the stopcock and fitting a new 15mm stopcock further along.

 

[Harvest Fields]

The black pipe is the incoming mains which then reduces down to either 15mm or 1/2 inch copper. Having mulled all this over, I’m considering abandoning the replacement of the stopcock and fitting a new 15mm stopcock further along.

If you do this and you have 1/2” pipe you will need 2 x old to new connectors and some copper pipe.

 

[Marcus Jones]

If you do this and you have 1/2” pipe you will need 2 x old to new connectors and some copper pipe.

Thanks for the help. Much appreciated.

 

[sammathias]

15mm copper will not connect straight to 1/2” copper. You will need an old to new connector.

Yes it will?? I always just use a 15mm end feed coupling?

A 3/4 pipe will need an adapter old to new..

 

[Stigster]

15mm copper will not connect straight to 1/2” copper. You will need an old to new connector.

I've always found them to be so close in size that the fittings are interchangeable on the 15mm - 1/2". The 22mm - 3/4" are way out so need an adapter but you have problems with the 15 to imperial?