I sort of remember reading that this was an EPA thing, but I can't find a link to support this information.
I suppose that you might be able to find a Y connection to combine two dump valves? Or maybe not...
If you have 2 separate valves, why would you need two separate outlets? It's just more plumbing to get trashed if you have a blowout.
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'97 2720 & '01 Chevy Silverado 1500 4x4
2011 & 2017 Prii, 10'x18' & 10'x9' Tents
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