Overflow from freshwater tank

Discussion in 'The Beginner' started by Cyclists, Oct 8, 2015.

  1. Cyclists

    Cyclists Funster

    Joined:
    Jun 22, 2014
    Messages:
    191
    Likes Received:
    62
    Location:
    South Woodham Ferrers
    When I fill up the freshwater tank it overflows (pours out from underneath). When I have a look under the van I cannot see anything other than what looks like a vent. Is it normal for it to overflow out this vent to such extent when filling the freshwater tank.


    Thanks


    John
     
  2. vwalan

    vwalan Funster

    Joined:
    Sep 23, 2008
    Messages:
    7,606
    Likes Received:
    3,858
    Location:
    roche cornwall
    could be an overflow . but it sounds as if the breather valve is letting water out .
    mine as done it almost since new .
    i fill till i see the first drip then stop.
    i do use a watering can usually so its easier to stop.
    with a hose it can waste a fair bit .
     
  3. DP_JAY

    DP_JAY Funster Life Member

    Joined:
    Mar 17, 2010
    Messages:
    1,801
    Likes Received:
    1,025
    Location:
    Cark, Cumbria
    Does it leak out all the time you are filling or only when its full?
    Most have an overflow of some sort, some on top of the tank, some on the filler hose.
     
  4. Cyclists

    Cyclists Funster

    Joined:
    Jun 22, 2014
    Messages:
    191
    Likes Received:
    62
    Location:
    South Woodham Ferrers
    cheers ..it's only when it's full. I fill with a hose mainly, so yes it pours out for a while then stops.
     
  5. scotjimland

    scotjimland Funster Life Member

    Joined:
    Jul 25, 2007
    Messages:
    28,936
    Likes Received:
    25,589
    Location:
    .
    Yes, mine also overflows from a pipe under the van..

    it can be very embarrassing on an aire when it's flowing down the tarmac to next door :rolleyes:

    When filling, I now watch or get Jan to watch the tank level gauge (which is quite accurate) ..
    when it shows full.. turn off water.. no overflow.
     
  6. CWH

    CWH Funster Life Member

    Joined:
    Jan 29, 2014
    Messages:
    2,868
    Likes Received:
    11,311
    Location:
    under a wand'rin' star
    First time we did that we were on a site in the Highlands.
    "Listen, you can hear water running - there must be a brook close by!"
    Hmm, yes, VERY close by! :whistle::rolleyes::LOL:
     
    • Like Like x 2
  7. knokinonabit

    knokinonabit Funster

    Joined:
    Dec 28, 2011
    Messages:
    2,483
    Likes Received:
    2,449
    Location:
    Stokesley, North Yorks
    That's how I know when ours is full. :whistle2: :wink:

    Must be wonderful to have an accurate gauge.
    As soon as I start filling ours, even from empty, the gauge shows full. :Eeek:
     
  8. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,700
    Likes Received:
    17,316
    Location:
    YO11 2BD
    The overflow should be a plastic/rubber pipe sticking out below floor level....not a vent.

    If its coming out of a floor vent you have a problem because water is flooding onto the van floor then out the vent.
     
  9. scotjimland

    scotjimland Funster Life Member

    Joined:
    Jul 25, 2007
    Messages:
    28,936
    Likes Received:
    25,589
    Location:
    .
    mine is not rocket science.. but there is nothing to break..

    it uses the KISS principal.. it has four s/s probes.. so it only shows, 0 - 25 - 50 - 75 - 100%

    grey tank the same system..
    .. but they get dirty and start to give erratic readings .. but easy cleaned through the top inspection hatch
     
  10. musson

    musson Funster

    Joined:
    Dec 25, 2013
    Messages:
    395
    Likes Received:
    139
    Location:
    grantham
    mine has overflow when filling (Swift)
     
  11. knokinonabit

    knokinonabit Funster

    Joined:
    Dec 28, 2011
    Messages:
    2,483
    Likes Received:
    2,449
    Location:
    Stokesley, North Yorks
    Yes, ours is the same, but, there is always a but, it is an Autotrail and the tank is underslung.
    The only way to get at the top of the tank is to remove it from the motorhome.

    We have had ours done :swear2:




    .
     
  12. scotjimland

    scotjimland Funster Life Member

    Joined:
    Jul 25, 2007
    Messages:
    28,936
    Likes Received:
    25,589
    Location:
    .
    On mine, both tanks are between the double floor and both have an inspection hatch inside the van.. great design.
     
    • Like Like x 1
  13. Badknee

    Badknee Funster

    Joined:
    Aug 25, 2014
    Messages:
    3,709
    Likes Received:
    15,899
    Location:
    notloB
    It's not so much a vent or an overflow, it's a very clever device called a "don't flood your MoHo" system. Invented I'm sure to stop idiots like myself from filling the tank too much and allowing water to come out of the inspection hatch. ;):LOL:
     
    • Like Like x 1
  14. knokinonabit

    knokinonabit Funster

    Joined:
    Dec 28, 2011
    Messages:
    2,483
    Likes Received:
    2,449
    Location:
    Stokesley, North Yorks
    Another reason why I would never buy another Autotrail.
     
  15. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,700
    Likes Received:
    17,316
    Location:
    YO11 2BD
    Wouldnt come out the inspection hatch if you remembered to refit the cover. :LOL:
     
    • Like Like x 1
  16. johnp10

    johnp10 Funster

    Joined:
    Oct 12, 2009
    Messages:
    7,646
    Likes Received:
    14,239
    Location:
    North Lincolnshire
    Ours does the same.
    Don't worry about other folks seeing it, it's only fresh water and they can see you are filling, not dumping.
     
Loading...

Share This Page