Galley Drain C30
Chip,I've had the same problem with my 1987 C30. There's a "one-way" valve in the drain line just below where the line "Tees" off that has given me most of the trouble, and now that I think about it, mine may be installed backwards. I'll check it next time at the boat, and let you know if that's the culprit.Hope this helps,Rogers/v Sea Esta