Vent under sink cause of smelly trailer?
My trailer smells gross come summer time. Was gone 3 weeks and come home to that sewer smell. To me it smells like gray tank. Pretty sure my P traps are still filled with water. It must be the kit...
Forum Discussion
dougrainer wrote:BFL13 wrote:
I never heard of an AAV until this thread started, so no help with that. I Googled to see what they are.
My 2003 5er didn't have any, and my stick house doesn't have any. Sort of reminds me of the dishwasher drain, where you have to leave the sink drain open as a vent for the dishwasher, but not exactly I guess. Learned something new again on this forum!
EDIT- seems they had to amend the plumbing codes a few years ago to allow these AAVs. As alternatives to roof venting, they could be handy for RVs, not just for island sinks.
https://garynsmith.net/venting-101-air-admittance-valve-pros-cons/
In 40 years and still working as a RV tech, I have never really seen a RV Gray Tank drain system from the sinks NOT HAVE a AAV. They are standard. The usual fix besides replacing is to install a ziplock bag over the AAV and secure with a rubber band. That usually fixes the smell problem. Doug
All I can say is my 2003 Komfort 5er didn't have any that I could tell. Just same sort of plumbing as the stick house. I have done work on the house and the RV plumbing at times.
The 5er had two grey tanks, one for the kitchen (galley) and one for the bathroom tub/shower and sink, each with its own roof vent. I worked on the bathroom sink drain when I changed the sink doing a reno, and also the kitchen sink double drain so I could get underneath its tap I was changing.
I don't see how I could have not noticed any AAVs. Was the same sort of plumbing as in the stick house (roof vented).
