Imperial to metric pipe conversion

[Chitter]

Hi, I'm looking for a 15mm (copper pipe) to 1/2" (copper pipe) compression coupler. I'd have thought that this would be quite easy to come by but no one seems to do it? Does anyone on this forum know where I could order this sort of coupling from?

Many thanks.

 

[Newboy]

15mm compression will be ok with 1/2" - the ODs are close enough for the olive and fitting to work

 

[Chitter]

I've been trying to fit a 15mm isolating valve to an old 1/2" pipe and although it fits, I cant use the isolating valve? It turns part way and then stops and if I try turning any further, the valve breaks internally.

I thought it was a faulty valve and tried another one - but the same thing?

 

[Newboy]

The valve internals don't touch the pipework, sounds like two duff valves - where did you source the valves?

 

[Chitter]

one was from a local plumber's merchants and the other from B&Q?????

 

[Newboy]

Seems strange that you've had two duffs. Are you sure that they failed - some of the quarter turn isos can be stiff until they have been turned a few times. Have a look down the open end of the iso and check if the ball is turning.

 

[Chitter]

Nope - ball turns fine when not connected. but as soon as you plumb the copper pipe in and tighten the nut, the ball only turns part way and then stops. if you force it, it breaks?

 

[JohnD]

is this a 90p valve?

You could splash out on a full-bore Pegler which is superior quality, and complain to the makers if it goes wrong.

http://www.screwfix.com/c/heating-p...cat3830014&brand=pegler&productdiameter=15_mm

 

[Nige F]

one was from a local plumber's merchants and the other from B&Q?????

Then the merchants must be stocking the same C-rap as B+Q. Not unknown I'm afraid