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Thread: No overflow lines

  1. Print this Post   #1
    Junior Member
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    No overflow lines

    Getting ready to take our new Tonyís Sundance 291qb on a short trip to try it out.
    I filledthe fresh water tank and made sure it was at a slow rate.
    When It was full water started coming out of the fill port and did not see any overflow line
    Do they not have any or can you suggest where they might be.
    Down below I found my fresh water drain and low point drains but donít see any other kines


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  2. Print this Post   #2
    Moderator danemayer's Avatar
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    Re: No overflow lines

    Hi Fern,

    Some, not sure all, models have fresh tank overflows that usually go through the frame and terminate in 90 degree Pex fittings. The overflows coming through the frame were introduced some years back on models using the 4 Way Anderson Valve rather than a "gravity fill" for the fresh tank fill.

    On our 2011 Landmark, we have a "gravity fill" with a vent next to the fill opening. When full, water comes back out the fill opening and sometimes spits a little out the vent.

    I've attached pictures of both the "gravity fill" and of an overflow.
    Attached Images Attached Images


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  3. Print this Post   #3
    Junior Member
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    Re: No overflow lines

    Thanks for the pics. I definitely do not have any extra lines besides the fresh drain and low point drain.
    It did spill out from the gravity fill as you mentioned


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  4. Print this Post   #4
    Prolifically Gabby Member JohnDar's Avatar
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    Re: No overflow lines

    Correct me if Iím wrong, but didnít the overflow lines come into being with the advent of the closed Anderson valve system to prevent over pressurizing the water tank? With an open gravity fill port, that was not a possibility.


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  5. Print this Post   #5
    Moderator danemayer's Avatar
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    Re: No overflow lines

    Quote Originally Posted by JohnDar View Post
    Correct me if Iím wrong, but didnít the overflow lines come into being with the advent of the closed Anderson valve system to prevent over pressurizing the water tank? With an open gravity fill port, that was not a possibility.


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    John,

    I'm not entirely sure, but I think on some recent builds using gravity fill, the fresh tank may have overflow ports. It's possible that tank manufacturer might find it easier to manufacture tanks all the same way rather than build 2 configurations; one with overflows and one without.
    Attached Images Attached Images


    Dan and Ann Mayer & fur baby Callie the Rally Dog
    2011 Landmark Rushmore
    • MorRyde 8K Independent Suspension
    • 8K Kodiak Disc Brakes
    • RV Comfort Systems Cheap Heat
    • MorRyde 33x90 Sliding Cargo Tray
    • Torklift Glowstep Revolution Aluminum Steps & Dirt Destroyer

    2014 RAM 3500 Laramie
    • Cummins 6.7 Diesel, AISIN Transmission
    • 4x4, Long box, Crew Cab, DRW 3.73
    • Hensley BD3 TrailerSaver Hitch
    • Garmin RV760 GPS


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  6. Print this Post   #6
    Prolifically Gabby Member JohnDar's Avatar
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    Re: No overflow lines

    Quote Originally Posted by danemayer View Post
    John,

    I'm not entirely sure, but I think on some recent builds using gravity fill, the fresh tank may have overflow ports. It's possible that tank manufacturer might find it easier to manufacture tanks all the same way rather than build 2 configurations; one with overflows and one without.
    That's a distinct possibility, Dan. The photos I took at the 3011 and 2013 Rally tours don't include complete photos of the water tanks. One does show the spin welded level sensors, though!
    Camp Gotchurwallett
    John & Darlene (with feline fuzzbutts Ally, Merlin & Mickey)
    Max the Cat - RIP
    2009 GMC 3500HD SLT CC D/A DRW
    2009 Bighorn 3670RL

    H.O.C. #1225

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