New Pipe Work

[CDH11]

I've just built a small extension and have moved the stopcock to a different location. I now need to run pipe work from this new location.

Just wondering whether the new pipe work would be better in 15mm or 22mm from the new stopcock.

The original pipe was 15mm and all I have added is a downstairs cloakroom.

It's a 4 bedroom house with 1 bathroom, downstairs cloakroom, kitchen and utility room.

Thanks

 

[Dotty]

Run it in 22. You don't know what the future holds and you might need the flow rate.

 

[plumber0808]

If the water was all in 15mm then do it in 15 again.

unless you have an unvented cylinder

 

[Killy Bing]

22mm to allow for the future.
ideally upto the first tee

 

[CDH11]

Thanks for the replies so far.

The black plastic underground pipe has an outside diameter of 21mm, just looking for an adapter to convert to a 3/4" fitting, but the only thing that I've seen is a MDPE female adapter 20mm x 1/2". Can't seem to find a 20mm x 3/4 fitting. Any ideas?

 

[Dotty]

Have a look on the philmac site, see what you need then go to your local plumbers merchant.

Universal Transition Couplings | Philmac