On our Alpine 3250RL, we have 2 grey tanks (41 gallons each) and one blank tank at 50 gallons. The dump handles are all in the water works area. The black and Bath Grey tank are on the back wall and the Kitchen Grey tank is on the side wall. On the drains, the Black and Bath Grey tanks use 3" pipe to a combined exit and the Kitchen Grey tank looks to use a 2" waste pipe to join the 3" just before the combined discharge.
The only issue I've had that I'm not happy with is that there seems to be seepage occurring past the valves. I use an old 1 gallon ice cream bucket to catch what collects behind the waste cap when I dump the tanks. Last weekend, I took the cap off and filled the entire 1 gallon bucket with what had seeped past the shutoffs. Is this normal?
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2012 F-350 SRW Lariat Supercrew 4X4 6.7L Diesel
2013 Keystone Alpine 3250RL
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