Gray/black dump system - am I nuts?
I will be as brief as I can be. I just bought a Denali 289RK. It has 2 gray tanks (one up front and one in the back). The one in the back is for the kitchen and has its own dump valve. The one up fron...
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It doesn't sound like a problem to me. You want to dump the black tank first anyways, so open the 3" black tank valve and after the black tank is drained open the 2" gray tank valve.
