Grey Tank Capacity - 2025 340rl

[Roland Snyder]

Anyone know the gallon capacity of the each of the grey tanks on the 2025 340rl? Specs say grey tank is 106 gal so I assume 53 gal each?

 

[George]

99.44% sure that each of your grays are 53 each. That's the way my '24 310RL is.
Also of note — on the 310RL they are at different levels so you can't really utilize both. If you put a termination valve on the outlet and open both gray tanks the kitchen water will flow into the shower tank. The shower and bath sink tank must be lower (in the drop frame) than the kitchen sink (in the main frame) (unverified).
Contrary to the plumbing diagram from Alliance my tanks drain as follows:
Source Valve
Shower #1
Bath Sink #1
Kitchen Sink. #2
Washing Machine Untested

 

[Roland Snyder]

99.44% sure that each of your grays are 53 each. That's the way my '24 310RL is.
Also of note — on the 310RL they are at different levels so you can't really utilize both. If you put a termination valve on the outlet and open both gray tanks the kitchen water will flow into the shower tank. The shower and bath sink tank is lower (in the drop frame) than the kitchen sink (in the main frame).
Contrary to the plumbing diagram from Alliance my tanks drain as follows:
Source Valve
Shower #1
Bath Sink #1
Kitchen Sink. #2
Washing Machine Untested

Thanks George. So on the attached picture of my Nautilus panel, would the Grey Tank valve next to the Black Tank valve be the kitchen sink and the other Grey Tank valve would be the shower and bathroom sink, correct?

 

[George]

Thanks George. So on the attached picture of my Nautilus panel, would the Grey Tank valve next to the Black Tank valve be the kitchen sink and the other Grey Tank valve would be the shower and bathroom sink, correct?

The only way to know for sure is to add food coloring to a drain and open a valve. Even someone else with '25 340RL may be different.
I food colored mine then labeled the valves.

 

[Roland Snyder]

The only way to know for sure is to add food coloring to a drain and open a valve. Even someone else with '25 340RL may be different.
I food colored mine then labeled the valves.

OK thanks - will do the food coloring to be sure.