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The way I do it
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06-10-2019, 04:25 PM
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bobbecky
Senior Member
Join Date: Jul 2013
Location: Box Elder
Posts: 2,910
Leaving any valves open makes your rig a vent for the RV park sewer system. When walking around any park, you can usually get a sewage odor from the rigs with open valves.
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2012 3402 Montana
2012 Chevy 2500HD D/A CC
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