Running Dual Black Tanks.....
Howdy I'm designing a compact travel trailer which is focused on extended dry camping and crossing the USA. I'm liking the layout that I have but due to small size I've got the combo shower/toil...
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You would need a valve between the two tanks unless the pump can be relied on to act as a valve. The problem is the waste will overfill the lower tank when parked or traveling on an incline.
