Flushing the black waste tank

[Jon ghiles]

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.

Joh Ghiles

[folivier]

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.

[77newell]

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.

[Chester B. Stone, Jr.]

When I am going to let mine sit for awhile, I back fill the tank a few time to flush it out.

[folivier]

That's why I like to wash clothes when we're ready to dump. Gives the tank a good flushing.

[NewellCrazy]

I think the main reason for backflush is to keep the tank level monitor operational and remove any sludge buildup.

[DavidBall]

We use the King Flush to back flush the tanks. Works well.