Quote:
Originally Posted by Tresslerd
My 2010 passport 288RRK Has two grey tanks that are tied together for overflow but when draining require separate connection to sewer line. Rear is galley tank and is unlabeled underneath at the rear under the kitchen. It has separate drain and valve pull/connection.
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I've seen/heard of some sinks or showers draining into the black tank, but other than someone adding the twist on valve at the sewer hose connection I've never seen of 2 grey tanks connected from the factory.
Not familiar with the floorplan of your rv, but typically if the kitchen & bath are significantly separated requiring 2 tanks I wouldn't believe the 2 tanks are connected together due the length of piping to do so, plus usually 2 separate valves = 2 separate tanks.
I'm no expert or rv tech so my opinion may not be worth the time it took to type it.