Fresh Water Pump Recommendation?

Discussion in 'General Maintenance/Repair Questions' started by LMBoat, Dec 7, 2021.

  1. LMBoat

    LMBoat Active Member

    Oct 4, 2006
    Ft Lauderdale
    1999 450 EB
    Cummins 6CTA's
    Hi All,

    I have 2 fresh water Jabsco Par-Max3 pumps @ 3.5 GPM (plumbed in parallel, I run them both at the same time). I have had them 6-7 years. They have been ok. A bit noisy, which I actually like as I know when they are running, but ok. I had a pressure switch go bad on one this past weekend, and prior to that, I was having a hard time bleeding all the air out of these pumps. I'm wondering if this is a sign of internal failure or a pending one. As I am contemplating a repair, I'm thinking it might be time to just replace both pumps and be done with it?

    Anyone have any recommendations on fresh water pumps? Other comments?

  2. Halfhitch

    Halfhitch Active Member

    Aug 24, 2021
    Venice, Florida
    1988 Laguna 23CC
    1988 Mercury 135 Black Max twins
    Nater Potater likes this.
  3. Pirate Lady

    Pirate Lady Well-Known Member

    Jun 2, 2020
    Middle River, Chesapeake
    Pirate Lady
    1991 250 Sundancer
    MMSI 338377928
    7.4 carb, Bravo 1
    I had an accumulator in all previous boats, its a must. Until I got this one. SR engineers put a real short run between tank, pump, bulkhead, that there is no room to install one one without a major reroute of plumbing. So I live with the dam pulsing.
    Nater Potater likes this.
  4. LMBoat

    LMBoat Active Member

    Oct 4, 2006
    Ft Lauderdale
    1999 450 EB
    Cummins 6CTA's
    I already have an accumulator tank. I changed out the small one for the large one a while ago. They do make a difference.
  5. Nater Potater

    Nater Potater Well-Known Member GOLD Sponsor

    Oct 19, 2020
    Southwest Idaho
    1992 300DA Sundancer
    Twin Merc Alpha Gen II I/O's with 5.7 V8's
    These things are the shizzle! Unlike a traditional on/off pressure switch like we're used to, this pump is a variable speed unit which reacts to a drop in pressure (like when you open a faucet) by speeding up in attempts to maintain the set pressure. No accumulator needed! I have one in my RV, and will be installing the same in the boat.
    Juliery, Sundancer and mdolesh like this.

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