dumping gray water, apparently no vent?
Black water dumps fine. Gray water tank is obviously not vented. Should it be? What can I do to overcome the vacuum issue while dumping?
Forum Discussion
Sometimes a vent pipe "stack" will drop from its proper position (height) at the rooftop. If it drops enough to submerge the tank end into the tank contents (liquid) it is no longer a vent. Can you get up there and look? Would probably have to remove a vent cap/cover to see.
