The pipe on the left, has a vented cap on it. I think it’s to the gray water tank and spews stinky air when we fill the tank. Is this normal? Can I plug this? It’s in the cabinet that used to have a washer/dryer. Now it’s a cat box closet.
That is the air admittance valve for the grey tank. It is a one way valve that allows air into the grey tank. If you are getting odors from it, change it out. You can buy them at a hardware store, even Lowe’s and Home Depot.
It’s an air admittance valve and it’s needed. They’re cheap from big box home stores.
https://www.homedepot.com/s/studor%20valve?NCNI-5 Studor Valve/Vent
Love It when this forum supply’s quick and correct answers to help someone’s quality of life. 🙂
Agree, it a bad air admitrence valve. The RV manufacturers use cheap junk that often fail.
I suggest a higher quality one like the Studor 20349 , or the Studor 20341
Buy a good one and I wouldn’t buy from Lowes or any big box. They tend not to last long. I gave up and just capped both of ours. All of our faucets are in eco mode so no issues in 2 years doing that.
That is a special vented cap. If it is malfunctioning and letting gasses/odor into your unit, replace it. Don’t just cap it.
Also, if you don’t already, you may need to treat your gray tank just like you do your black tank. We find that if we don’t treat our gray tank, it can smell just as badly as the black tank.
