we have a 2024 Avenue 32rls with two gray water tanks that hold 53 gallons each for a total of 106 gallons of gray water. we are dry camping and was wondering and I have heard that if you leave both gray water valves open you can fill both with gray waste water from the shower and the sink in the bathroom. can anyone confirm this ? I know the shower and the sink fill up one of my gray water tanks really fast and the sink in the kitchen is rarely full when we use it. like I said I've just heard that once the gray water is full it'll push into the second tank. just trying to find out if that's a fact. any help appreciated. thanks!
Gray water tanks
- Thread starter SKYSKIOC
- Start date
In theory its true both tank will fill. But its not that simple. The position of the grey tanks relative to each other and the manner in which the tanks are piped to the discharge will impact how easily the tanks backflow into each other.
For starters if both tanks are not mounted at the same level they will not balance themselves or reach equilibrium between the tanks.
My experience has been that I can easily combine both grey and black tanks to increase my waste storage capacity but combining grey tanks has not worked nearly as well.
For starters if both tanks are not mounted at the same level they will not balance themselves or reach equilibrium between the tanks.
My experience has been that I can easily combine both grey and black tanks to increase my waste storage capacity but combining grey tanks has not worked nearly as well.
Midnight Rider
Well-known member
Don’t your sink drains start to stink if you fill grey tanks with sewer?
Typically I'm filling my black tank with grey water. The black tank always has additional capacity vs. the grey tank. At times I try to take advantage of that additional capacity and allow the grey tank excess back fill into the black tank.