NMDriver wrote:
How do those sewer gasses get past the P-trap?
It won't but it may go up into your grey tank, which I do not see as a problem either, since it is then vented out the vent pipe, but some people seem to think this is an issue for some reason :h
Sewer flies setting up home in your grey tank.
Then if Air Admittance Valve doesn't fully close they can be inside RV.
If sink 'p' trap goes dry...inside RV
There are 'things' living in those sewer lines.
That is what some folks have concerns over.
Personally I don't but then I don't leave any waste tank drain valve open unless dumping.
I like a FULL tank for that 'whoosh' affect :B