Grey Water Waste Tap Adaption

Discussion in 'Motorhome Chat' started by Gloombusters, Jul 8, 2015.

  1. Gloombusters

    Gloombusters Funster

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    I'm looking for ideas to modify the waste water tap on our Elddis Autoquest so that it drains a bit faster.
    It has what I believe is a standard on/off tap that you can push a hose connector onto.
    What I had in mind was some kind of plumbing tap that might replace it so when opened it would 'whoosh' out and I wouldn't have to stand watching it slowly drain!
    Have any of you made such a modification and what did you use?
    Any ideas??
    Thanks
     
  2. mike mcglynn

    mike mcglynn Funster Life Member

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    I have 40mm ball valve 1/4 turn very easy to empty on my van plastic fitting try local garden centre or pond /aqua fittings:)
     
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  3. NickNic

    NickNic Funster Life Member

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    If it's not "whooshing" out when you first open the tap are you sure it's not partially blocked? Give the tank a clean first and see if that helps. Lots of methods of doing that. We favour the cheap coke one.
     
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  4. namwaldog

    namwaldog Funster

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    Don't forget that in order for your tank to empty quickly, air has got to get into it. I am not familiar with the plumbing on your MH but if your sinks and shower are trapped then no air will get into the tank.
    The same will apply if you have plugs in place in the sinks and shower.
    Also bear in mind that the grey water is probably taken to the tank in flexible tubing and if there is a low spot on any of these tubes water will lie in these spots and form a trap again stopping air getting into the tank.
     
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  5. Vic

    Vic Funster

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    I got fed up and embarrassed at aires waiting for mine to drain. Tried other valves and so called fixes, all failed. So I took drastic measures and drilled a 2 inch hole in the bottom of the waste tank and fitted a pond gate valve. Then attached plastic pipe to the handle to open it without getting under the van. Total cost was less than £20 and the 100lt tank empties in less than 30 seconds. It was installed two years ago without any issues.
     
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  6. Gloombusters

    Gloombusters Funster

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    Thanks Vic, that was brave to do that but it seemed to work well. I'll add that to my list of ideas
     
  7. GJH

    GJH Funster Life Member

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    If it is a tap on the end of a 20mm convoluted hose it will never woosh. Never did on our 2004 Autoquest anyway :)
     
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  8. lorger

    lorger Funster

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    I find if you leave it open while driving round corners it will woosh out :imoutahere:
     
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  9. Gloombusters

    Gloombusters Funster

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    Yes thanks, have tried that one already!!!
     
  10. Cossieg

    Cossieg Funster

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    Sounds like you need to fit bigger pipe with a suitable valve. Lots of places sell 40mm pipe and fittings, i would go for that.
     
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  11. Allanm

    Allanm Funster

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    Our waste tank drained slowly on our Autosleeper. I took the tap apart and found a sleeve inside with a much smaller hole in it. No idea why they would restrict the outlet after advertising that it has "large bore waste pipes for quicker emptying". Anyway, I took the sleeve out and it drains twice as fast now.
    It may be worth checking if yours has anything similar in it.
     
  12. Gloombusters

    Gloombusters Funster

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    Thanks Allanm I'll check that out.
     
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