Hi, I need to divert a 32 mm waste pipe (from a basin) into a 40mm wast
pipe (from a bath), but I am worried that when the bath is emptied tha
the water in the basin trap might be siphoned out and that I will ge
foul air traveling up the 32mm pipe.
Is this likely, I would be Tee(ing) the 32mm pipe into the 40mm pip
approximatley a metre from the bath