Pumping Black/Grey Water Tanks

[Gil_J]

Joe, I've had a macerator before. No thanks, don't want or need one. They are good for pumping uphill, that's about it.

[Joe Camper]

I saw this online somewhere years ago and copied it it works really good and it was $69 or something plus Hardware. Everything that you can buy that's preordained macerator is a lot more dough than that and these have just slightly more powerfull bigger motors.

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Big end waste tank little end hose.



I can run a garden hose from in front of my house through a basement window and shove the end of the hose not just in the toilet bowl but shove the end of the hose all the way down into the closet flange in the bottom of the bowl and you can pump into your toilet that way and it won't stink up the house. It's always worked good. Just beware if you allow it to accumulate in the bowl you're going to smell it. Run clean water through for rinse.

It's quick too, not slow.

[Parkers]

Now I am worried about attending the FMCA rally in Gillette, Wyoming in July. We will go into "conservation mode" but what if we need a pump out? If I am understanding correctly, gray water should not be a problem due to all the vents. I am assuming the pump truck will create a larger vacuum than the vent can handle on the black tank? Is there some way to force the toilet flapper valve to stay open? Can't the pump truck throttle back to idle? Surely other Marathon owners have crossed this bridge. Why couldn't I stand by the toilet and continuously flush it to relieve the vacuum? Sure would appreciate other Marathon owners to give us their advice and experience.

[Gil_J]

Philip,

Just open black and gray tanks at the same time.

[Parkers]

GIL, after posting , I wondered why it would not be the best solution to just open both tank valves. Surely the pump truck couldn't overwhelm both tank vents or can it? But you are the first one to come up with this solution, after discussing macerators, swimming pools and so on. Wonder why only Marathon? I would still like to hear if anyone doesn't think this is the correct answer.