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  1. #1
    Join Date
    Aug 2008
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    Cottage Grove, MN
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    723

    Default Reversible pumps

    Can you run two reversible pumps off the same thru-hull intake? If you put a valve and a T on the intake then connect two reversibles, would there be any issues filling or draining if you only ran one of the pumps at a time? I originally thought that when draining, it would push water up the other pump, but I think the impeller acts like a check valve.
    Last edited by mnpracing; 09-04-2012 at 07:10 PM.
    2006 Outback V - Gone
    2008 LSV - Gone
    2013 other brand

  2. #2
    Join Date
    Jul 2011
    Location
    Murrieta, CA
    Posts
    812

    Default

    Maybe I don't know what you are trying to accomplish but it would be cheaper to use a selective Y valve if you were just wanting to fill 2 separate bags.

    Sorry if I am going in the wrong direction.
    2010 Moomba XLV
    340hp cat
    Gravity 3, wake plate
    Rad-a-cage

    I have a love for ballast and large wakes.
    1100 v-drive lockers
    1180 under the playpen
    + lead and a collection of other ballast bags

  3. #3
    Join Date
    Aug 2008
    Location
    Cottage Grove, MN
    Posts
    723

    Default

    that makes sense. I'll keep that in mind. Ideally I don't want to have to switch a valve, but it may come down to that.
    2006 Outback V - Gone
    2008 LSV - Gone
    2013 other brand

  4. #4
    Join Date
    Jul 2011
    Location
    Murrieta, CA
    Posts
    812

    Default

    I think you would be fine with a T and 2 pumps running on it at seperate times. I'd call Wakemakers just to be certain.

    They have the y valves if you need to go that route.
    2010 Moomba XLV
    340hp cat
    Gravity 3, wake plate
    Rad-a-cage

    I have a love for ballast and large wakes.
    1100 v-drive lockers
    1180 under the playpen
    + lead and a collection of other ballast bags

  5. #5
    Join Date
    Oct 2010
    Location
    Lake Wylie NC Area
    Posts
    637

    Default

    Quote Originally Posted by mnpracing View Post
    Can you run two reversible pumps off the same thru-hull intake? If you put a valve and a T on the intake then connect two reversibles, would there be any issues filling or draining if you only ran one of the pumps at a time? I originally thought that when draining, it would push water up the other pump, but I think the impeller acts like a check valve.
    Ive successfully run 2 impeller pumps on a single 1" thru-hull many times. This is a typical setup for a dedicated surf system. If your budget will allow for a pump for each sac, I would go that route. Trying to fill and drain multiple sacs with a single pump always seems to end up somewhat problematic and not user friendly. Ive had issues with diverter valves allowing air to be drawn through the closed off port. This makes it hard for the pump to prime. This usually occurs during the drain cycle.

  6. #6
    Join Date
    Jan 2008
    Location
    Keuka Lake, NY
    Posts
    5,497

    Default

    Fill should not be a problem, I had two rule 1100 attached to the 3/4 thru hull and worked great in the old boat, drain pums were seperate, but I had five of those.
    A Day at the Lake...Priceless
    A Day in Powder...Endless


    Joe V
    2012 Möbius XLV~ Loaded & Exiled
    2007 Outback V ~ sold

  7. #7
    Join Date
    Aug 2008
    Location
    Cottage Grove, MN
    Posts
    723

    Default

    Quote Originally Posted by MLA View Post
    Ive successfully run 2 impeller pumps on a single 1" thru-hull many times. This is a typical setup for a dedicated surf system. If your budget will allow for a pump for each sac, I would go that route. Trying to fill and drain multiple sacs with a single pump always seems to end up somewhat problematic and not user friendly. Ive had issues with diverter valves allowing air to be drawn through the closed off port. This makes it hard for the pump to prime. This usually occurs during the drain cycle.
    Does priming even come into play on the impellar pumps? I thought one of the main advantages was that you didn't have to worry about priming issues.
    2006 Outback V - Gone
    2008 LSV - Gone
    2013 other brand

  8. #8
    Join Date
    Oct 2010
    Location
    Lake Wylie NC Area
    Posts
    637

    Default

    Quote Originally Posted by mnpracing View Post
    Does priming even come into play on the impellar pumps? I thought one of the main advantages was that you didn't have to worry about priming issues.
    Yes, they are self-priming, but not when there's a leak. Air is easier to draw then water. So if the pump is drawing unwanted air through a 3-way diverter, then it will struggle to pull water from the sac you are trying to drain.

  9. #9
    Join Date
    Jul 2008
    Location
    Snellville, GA & Lake Sinclair
    Posts
    6,764

    Default

    MLA - have you experienced the air draw when using the Bosworth Sealect directional Y valve or some other model?

    My experience with the directional valve has been limited, but I have not noticed any issue so far in getting the bags attached to the valve to fill or empty.
    Drew
    New ride: 2012 Mojo
    Old ride: 2008 OBV

  10. #10
    Join Date
    Aug 2010
    Location
    NW Houston
    Posts
    101

    Default

    I run two Jabsco impeller pumps tee'd off of one 1-1/4" thru hull. No problems filling both, draining both, or fill & drain at the same time.
    89 Supra Saltare Restoration Project

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