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
myredracer wrote:
We had an AAV at the kitchen sink fail in the first year of owning our TT from new. Replaced it with one from Lowes. It failed shortly afterwards. Then I installed a commercial grade Oatey one and that fixed it for good.
AAVs are required under NFPA standard 1192 which is specifically for RVs. They call it an anti-siphon vent device.
Not required, just permitted when the manufacturer doesn't want to do a roof vent.
7.6.6 AntiÂSiphon Trap Vent Devices.An antiÂsiphon trap vent device shall be permitted to be used only as a secondary vent in accordance with the following: (1) An antiÂsiphon trap vent device shall be installed in accordance with the terms of its listing. (2) One antiÂsiphon trap vent device shall be permitted to serve not more than two fixtures. (3) AntiÂsiphon trap devices shall not be used as a primary vent for toilets or holding tanks. (4) When a fixture drain or main drain bypasses a holding tank, that drain shall be vented by a primary vent. (5) AntiÂsiphon trap vent devices shall not be used on more than two consecutive fixtures before being vented to outside atmosphere. (6) Two fixtures protected by one antiÂsiphon trap vent device shall be drained by a common 1 ½ in. (38.1 mm) minimum drain. (7) The device shall be installed in an accessible location that permits a free flow of air.
