Sinks not draining/poor venting?
Two new under sink vents and it still is not draining my sinks, if I unscrew the air vent the sinks will suck down like a champ. I can't have a roof vent because I have a island sink, the only roof v...
Forum Discussion
Again, your AAV has nothing to do with venting your holding tank. You have people telling you your holding tank needs to be vented. Find the vent and make sure it is not plugged.
