Redoing ground floor bathroom. At present I have three seperate waste pipes for water softener, basin and bath all going to a gully outside. Would it be possible to run just one waste pipe with two branches joining it to the gully, or would it cause problems with syphoning? Each waste would have its own trap. Water softener has a washing macine type waste with trap. Total run is about 2 metres and it is a single stack waste system. Thanks everyone.
I'd go for it. I can't see a 2m length causing syphoning problems, but in the unlikely event that it did, you could easily add in an air-admittance valve without messing up all the pipework.
(And use 1.5" pipe rather than 1.25", obviously.)
David
Combining the wastes is fine but you should increase the size of th main waste pipe to 2" to allow for the additional branches
-- Nick H
Also do not make the 'falls' too steep. 2.5 degrees is correct. Too steep a fall will cause the water to travel too fast down the pipe and will draw air behind it. Also make all traps 3" deep seal traps, (anti syphon will help).
"Bookworm" wrote in news:1146397578.551526.225500 @u72g2000cwu.googlegroups.com:
Consider HepVO - excellent waste vales.
Thanks everyome for your advice. I will give it a go then. Have a great bank holiday.
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.