Adding a “supplemental” gray tank?
We love the floorplan of our new 5er, but I’m not happy with the holding tank capacity...primarily gray. I’ve thought about replacing the tank with a larger tank, but I’m wondering if it’s possible to...
Forum Discussion
Old-Biscuit wrote:ericosmith wrote:Halmfamily wrote:
If you have both grey and galley tanks add an external gate valve. Keep the external gate valve closed and open both the grey and galley they will equalize each other. I now have 120 gallons of grey capacity by doing this.
I did this a long time ago but nothing happens. I can't for the life of me figure out why they don't equalize.
Where are your tanks located?
DO they use the same drain line to sewer hose?
Extra valve on common drain closed and black/grey tank drain valves open ----water seeks it's own level (higher level flows to lower level until same level)
I'm not sure where the tanks are located but they share a common drain line to the external gate valve. The bathroom fills and the kitchen stays almost empty. The bathroom is on the upper level as opposed to the kitchen with is on the lower so it's counter intuitive to think the bathroom is lower than the kitchen. When I open the individual drains with the gate closed, the sensors don't move a bit either way.
