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Old 01-11-2016, 10:08 AM   #1
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Holding Tank Dumping

What is the recommend process of proper dumping black and gray holding tanks.


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Old 01-11-2016, 10:10 AM   #2
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Most dirty to cleanest. Dump the black first then the galley (if you have one) and then the grey. flushing each as you go.

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Old 01-11-2016, 02:26 PM   #3
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Old 01-12-2016, 08:22 AM   #4
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See if this link helps:

How to Dump RV Tanks (it's not so icky!)
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Old 01-17-2016, 10:46 PM   #5
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Holding Tank Dumping

Between black and gray, use the black water flush if you have one. Then the gray will flush out all those remnants too from the exit area and flexible tubing.

PS: don't use your fresh water hose OR the potable water supply tap for the black water flush. Either use a black/gray hose or a garden hose you brought along that you will not use for potable water. Use the sewer flush/rinse tap they hopefully have at the dumping station for this and for rinsing the sewer hose.

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