wheres that smell coming from?
After dumping the tanks from camping this past labor day w/e, I noticed a really funky smell inside the trailer when I went in to add water and chemicals to the black tank. Almost a sewage smell. ...
Forum Discussion
Bobbo wrote:I don't believe your last sentence is correct. It would be possible to have full traps and no smell, even without an AAV present. Actually, a functioning air admittance valve may allow the trap water to be drawn out quicker when dumping as it allows for the displacement of the trap water.
One of my roof vents got blocked up. When I dumped the next time, the large inrush of air destroyed the AAV (Air Admittance Valve) by the sink trap under the counter. From then on whenever I dumped that tank, it sucked all of the water out of the sink trap, letting in the sewer smell.
I figured out about the broken AAV and replaced it. That fixed the problem, at least until I dumped the next time when THAT AAV got destroyed. After that, I discovered the blockage of the roof vent. I then fixed the roof vent blockage, replaced the AAV again, and have had no problems since.
A test for whether you need to replace the AAV, if you run the sink traps full of water and the smell goes away, the AAV needs to be replaced.
