Sink vent
I'm doing a kitchen remodel and have an opertunity to get rid of the "cheater valve" and run a real vent. My question is, do I really need to run 1 1/2" pipe for just the vent or could I reduce it dow...
Forum Discussion
Old Biscuit is trying to tell you that small vents will cause p-traps to be sucked dry when the dump valve is opened and a lot of water leaves the tank quickly.
