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Black tank flush system inlet on top of tank
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12-31-2021, 09:04 AM
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Cummins12V98
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Join Date: Feb 2013
Location: on the road
Posts: 1,188
Some worry about cross contamination with removing the Vac breaker. I have shut off valves so the possibility is minuscule to have domestic supply go down and try to draw water backwards. I replaced both with PVC fittings and pipe behind shower valve in bathroom.
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