Forum Discussion

chr_'s avatar
chr_
Explorer
Oct 22, 2015

Air Admittance Valve

On a recent hot weather camping trip, we noticed "that smell." You know, the nasty sour GREY water smell you should only experience when dumping the greay water tank? I discovered we have one of these AAV's under the kitchen sink.

I think it is no longer working, as it stinks under the kitchen sink. Before I tear into this thing, are they able to be disassembled, and cleaned?

I never realized that our Nomad 2020B didn't have a vent stack pipe on the curb side of the coach until now.

Anyone deal with one of these? I'm thinking of doing a return vent loop over to one of the other vents and getting rid of this thing.

  • Yep, even the ones in residential construction routinely fail and cause a stink. Applying the same quality factor of houses to RVs to these, I bet the failure rate is pretty high.
  • Duhhh. I just found some other posts (quite recent ones, actually) about this very problem. I must have a cheap one that has failed...