Suds lock? in kitchen sink drain plumbing
Our fiver, like most, has a separate gray tank for the kitchen sink. The vent going up to the roof is 8 or 9 feet away from the sink. The P trap is a couple of feet to the right of the left hand bow...
Forum Discussion
Bill.Satellite wrote:
Why is it not a sign of a bad valve. If air can't get in, suction is created and the water won't drain out. You removing the valve makes it work properly. Sure sounds like a bad valve to me.
X2
If galley tank drains OK when dumping then roof vent is clear
So that leaves the AAV NOT opening which then makes sink draining slow
