Forum Discussion
mobeewan
Jan 04, 2015Explorer
As long as there is a roof vent for the tank the air admittance valve shouldn't keep the tank from emptying. The air admittance valve keeps the p-traps from getting sucked empty when water goes down the drain to the holding tank.
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,108 PostsLatest Activity: Feb 01, 2025