Good Sam Club Open Roads Forum: Cheater Vent - Air Admittance Valve
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 > Cheater Vent - Air Admittance Valve

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Camper_Jeff_&_Kelli

Seattle

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Posted: 08/23/20 10:03pm Link  |  Quote  |  Print  |  Notify Moderator

Get a better AAV valve, not the cheap one.[image]

About 25 bucks.


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Rover_Bill

NE. Ohio

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Posted: 08/23/20 11:29pm Link  |  Quote  |  Print  |  Notify Moderator

My AAV's (one at kitchen sink and one at bathroom sink) will occasionally jam open when dumping the full grey tank. Simple maintenance is to unscrew the AAV and shake it until the internal rubber seal rattles. If it doesn't rattle then I stick a thin screw driver in the internal slots and bump the seal loose.


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Kayteg1

California > Nevada

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Posted: 08/24/20 09:27am Link  |  Quote  |  Print  |  Notify Moderator

Rover_Bill wrote:

My AAV's (one at kitchen sink and one at bathroom sink) will occasionally jam open when dumping the full grey tank. ..


You probably have quite common case that main tank vent pipe is inserted few inches inside the tank.
That was common issue on some motorhome black tanks and develop procedure called "harpooning"
Hacksaw blade attached to long pole inserted via 3" drain pipe would allow cutting too long pipe inside the tank.
No clue how to do it on gray tank though.





Freep

Wisconsin

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Posted: 08/24/20 04:52pm Link  |  Quote  |  Print  |  Notify Moderator

Camper_Jeff_&_Kelli wrote:

Get a better AAV valve, not the cheap one.[image]

About 25 bucks.


This is the one I bought and still ran into issues, until I sealed it. When this valve didn't help I just sealed it up and made sure the sink drains were closed when not in use.


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