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Old 05-06-2013, 04:59 AM   #1
Jon ghiles
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Default Flushing the black waste tank

what do others use to back flush their holding tanks. I have been reading about Hydroflush and king flush. Are any of these necessary in our newell coach and what is the best one if so.

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Old 05-06-2013, 01:42 PM   #2
folivier
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What year do you have?
If you have the single combined tank I find that flushing is not necessary since there is enough liquid from showers, clothes washing, etc. to keep the solids in solution.
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Old 05-06-2013, 02:23 PM   #3
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During the decade that I've owned my 77 coach with the combined tank that Forest mentioned I have never flushed and only once had a problem. The problem occurred when the outlet valve seeped liquid but not the solids and coach sat for a long time and I ended up with the outlet jammed with solids. Solution: think Robin Williams in the move "RV". I replaced the dump valve and never had another problem.
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Old 05-06-2013, 03:10 PM   #4
Chester B. Stone, Jr.
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When I am going to let mine sit for awhile, I back fill the tank a few time to flush it out.
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Old 05-06-2013, 03:57 PM   #5
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That's why I like to wash clothes when we're ready to dump. Gives the tank a good flushing.
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Old 05-06-2013, 04:35 PM   #6
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I think the main reason for backflush is to keep the tank level monitor operational and remove any sludge buildup.
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Old 05-07-2013, 05:18 PM   #7
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We use the King Flush to back flush the tanks. Works well.
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