Is it Ok to join the waste pipes from bath and separate shower
together befoire they join the soil pipe, if so do I need a non return
valve at all? What are the problems?

To get both into the soil pipe separately I will have to put in a 180
deg bend because of all the other fittings.

Richard

richard wrote:
Is it Ok to join the waste pipes from bath and separate shower
together befoire they join the soil pipe, if so do I need a non return
valve at all? What are the problems?

Yes, that's fine. Assuming you have adequate fall on both waste pipes,
there's no need for non-return valves or anythig like that.

David

Lobster wrote:

Yes, that's fine. Assuming you have adequate fall on both waste pipes,
there's no need for non-return valves or anythig like that.

Second that...

Also try and get a "swept" Tee for the extra connection to the pipe in
the middle - along with a slight fall on the pipe run that ought to
ensure there is no danger of your bath water popping up in the shower!

--
Cheers,

John.

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