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Danfoto

I'm on the final leg of our new bathroom, and am really scratching my head about the bath waste pipe so would very much appreciate some advice please.

The trap on the bath waste needs to connect to a more-or-less horizontal run of 40mm which is solvent-welded into a strap-on boss on the soil stack, but I have an alignment problem.

If I fit a standard Marley P trap the discharge is 50mm too high to line up with the pipe. Normally I'd just use a couple of 45 degree solvent bends to lose that difference and all would be plain sailing. Unfortunately, I have only 20cm of horizontal pipe to play with before I hit the boss!

Changing the bath height or moving it further away from the soil stack to give me more scope is not an option, and neither is a new connection to the soil stack at the right height. I haven't got a couple of 45 degree bends here right now to see if I can lose 50mm in such a short run of pipe, but if I can't, what are my options?
 
point the trap in an other direction and come back on yourself ? not ideal but its not an ideal situation your in.
 
Oooooh ... now why didn't I think of that? I think I'll be sleeping a bit better tonight now, thanks!
 
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