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.
Maybe it is. I was looking at it the other way. Air needs to get out, not in, for the drain line to flow. That is what the main vent is supposed to do. But maybe the lateral needs air going in at the valve.
It doesn't seem to happen without suds, though. I already replaced the valve a while back. I don't recall if it was happening with that one. That one was leaking odors back out.
I'm going to try some experiments with the two valves, suds and no suds.
