White waste pipes

[Tristar]

Can anyone provide a definitive answer:

Why push fit and solvent fit pipes of nominally the same size, e.g. 1.5", are not actually the same size.

It would be so much easier if you could use them for either.

Also, can anyone who knows about plumbing standards, explain why these sizes vary so much between suppliers (apart from their own commercial interests), such that it is difficult to mix different brands. Is there no British Standard applicable to these?

Thanks.

Please ignore

Entered in the wrong forum in error.

 

[Mw Roofline]

42 and 32mm solvent is different size to 42 and 32mm push fit to prevent people accidentally welding onto non solvent pipe. If you put a solvent and pushfit pipe next to each other its quite hard to tell which is which.

I think you can mix and match pushfit, but stick to the same brand for solvent.

 

[joinerjohn]

Here ya go. The definitive answer from Tomplum.
http://www.youtube.com/user/TheTomplum#p/a/u/2/rXq8rfpq-Tw

While your there have a look at his other videos, the multimeter one will have you in stitches.

 

[Mw Roofline]

Here ya go. The definitive answer from Tomplum.
http://www.youtube.com/user/TheTomplum#p/a/u/2/rXq8rfpq-Tw

While your there have a look at his other videos, the multimeter one will have you in stitches.

The guys a legend