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The big flush!
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12-14-2012, 04:36 AM
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DonandBonnie
Montana Master
Join Date: Jun 2006
Location: Madison
Posts: 1,239
M.O.C. #5906
This may be a technicality, but the sticker above my sprayer says do not use without the black tank valve open. I suspect its just a preventative measure to block black water from possibly backing up inside the coach.
DonandBonnie
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