Grey Waste Tank Emptying

Discussion in 'Motorhome Chat' started by Manic, May 25, 2015.

  1. Manic

    Manic Funster

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  2. DavidG58

    DavidG58 Funster

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    we use similar on small pumps at work, I really can't see it working on grey waste, as you say gravity alone will hardly push the pipe apart, but the biggest problem will be having the right length, it will not go round corners, you need a long bend, so really not sure what length you would need to start with

    Non starter I would have thought, only advantage would be packing size, but we only have about 5m of flexible corrugated hose that coils up small enough for our outside locker and has always been long enough (we actually have 2 lengths 1.5 and 3.5m with a joint. (y)
     
    Last edited: May 25, 2015
  3. GAVLAD

    GAVLAD Funster

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    I use the corrugated type and its stored inside a narrow width drain pipe which is screwed to the ceiling of the garage, so it's out of the way but easy to stowe
     
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  4. Sundowners

    Sundowners Funster Life Member

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    Lay-flat hose is fine for pumping out, but it kinks very easily, so I wouldn't think it would work too well on gravity dumping IMHO
    As Gavlad said---it probably wouldn't open without pressure from a pump (macerator)
     
  5. irnbru

    irnbru Funster Life Member

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    oops
     
    Last edited: May 25, 2015
  6. Johnnyb

    Johnnyb Funster

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    I've got similar that was left in my motorhome by the last owner. It works fine as long as you have the pipe fairly straight although once 90 litres starts flowing from the tank it's surprising how much pressure is created.
     
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  7. Manic

    Manic Funster

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    That was my thoughts, can't see how it would work.
     
  8. Manic

    Manic Funster

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    Ok when the tanks full but so could when there's less in the tank.
     
  9. Manic

    Manic Funster

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  10. MikeandCarolyn

    MikeandCarolyn Read Only Funster

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    Help me understand :) Do you guys have to attach some sort of hose every time you want to empty Grey tank ?
    Don't you have a means of driving over,swinging already attached pipe into position and opening tap ?
     
  11. Tootles

    Tootles Funster

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    Is this your coachbuilt then??:)

    gully.jpg
     
  12. knokinonabit

    knokinonabit Funster

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    I attach the flexi hose to the waste outlet and feed it under the nearest MH/caravan, or into a convenient hedge row, and leave the tap open.
    My tank never seems to get filled up and I don't have to drain it out along the road as I am travelling like some seem to do.












    :reel:
     
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  13. Tootles

    Tootles Funster

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    A good plan. We carry a grid top in the van, throw it onto the ground and empty the grey waste into it. If anyone comments, I just say that the grid must be blocked. (y)(y)(y)
     
    Last edited: Jun 13, 2015
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  14. jonandshell

    jonandshell Funster

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    We don't attach a hose to our grey waste outlet.
    It used to keep getting run over by following vehicles!:)
     
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  15. Manic

    Manic Funster

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    No, but if your in a position to have your waste drain into a hedge when on a CL it's easier than having to empty tank using a bucket.
     
  16. MikeandCarolyn

    MikeandCarolyn Read Only Funster

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    Nope-that's the Toad,carries a genny as well(y)
     
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  17. MikeandCarolyn

    MikeandCarolyn Read Only Funster

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    Our grey waste outlet has short length of corrugated hose and then a short length of plastic pipe with 'L' end.It clips under chassis.I only have to get alongside, within a couple of ft of, drain point and can then swing nozzle end over drain.
     
  18. Gorse Hill

    Gorse Hill Funster

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    Nice to see your back toots, missed your humour(y)
     
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  19. Peter & Elaine

    Peter & Elaine Funster

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    I personally use the slow
    Drip drip drip method
     
  20. Tootles

    Tootles Funster

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    Thanks GH, missed it myself. (y)
     
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