On our Cougar the two tanks are connected at the final 3" pipe just before the dump connection . Is your rig set up with two dump connections? Or, is the question more about getting maximum flow through the grey lines? I dump the black tank first, then the galley and finally the bathroom grey.
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2017 Cougar 279RKSWE
2007.5 Dodge Ram 2500 6.7 Cummins
Retirement Training Completed
I think the little voices in my head have started a chat group.
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