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Water Pump Noise

Discussion in 'Cruising Sailors' started by Sailgunner, Jun 5, 2018. Add this thread to a FAQ

  1. Sailgunner

    Sailgunner

    Joined Jun 4, 2004
    813 posts, 26 likes
    Hunter 410
    US Punta Gorda
    Has anyone figured out how to reduce the fresh water pump noise? These things are fastened to the hull and vibrate throughout the boat. They have rubber bases but they don't do much.
     


  2. dlochner

    dlochner

    Joined Jan 11, 2014
    1,966 posts, 657 likes
    Sabre 362
    US Fair Haven, NY
    What kind of pump do you have? The diaphragm piston pumps that are belt driven are noisy. We replaced ours with a ShurFlo Aqua King and found it to be much quieter and we eliminated the accumulator tank.

    Another option is provide greater insulation from the hull. Perhaps build a shelf and install the pump on the shelf so it is not in contact with the hull.
     


  3. Ken Cross

    Ken Cross

    Joined Oct 24, 2010
    1,592 posts, 188 likes
    Hunter 30
    US Everett, WA
    Put a small shelf under the pump mounted on soft rubber feet. Otherwise check in at an RV parts store.

    Ken
     


  4. Mark Maulden

    Mark Maulden

    Joined Jan 25, 2011
    1,542 posts, 111 likes
    S2 11.0A
    US Anacortes, WA
    You might put it on rubber feet. But the bolts still come in contact with structure. You need rubber feet on the bolt head, an oversize hole, and feet under the nut. The only thing to touch boat is rubber. Personally, I let mine make some noise. I want to know when its on..
     


  5. odaydokay

    odaydokay

    Joined Jul 5, 2011
    261 posts, 9 likes
    Oday 28
    US Madison, CT
    I agree. The only thing would add is be sure you have a diaphragm tank, for example a 1 gallon Groco. This cuts the number of cycles way down, thus also the wear on the pump and, in this case, the number of times it comes on and irritates you.
     


  6. dlochner

    dlochner

    Joined Jan 11, 2014
    1,966 posts, 657 likes
    Sabre 362
    US Fair Haven, NY
    Well sort of, adding a pressure tank will cut down on the number of cycles however, it will not cut down on the total run time as run time is based on the volume of water pumped which is the same as whether the pump runs for 10 30 second runs or 1 5 minute run. The frequency of pump irritations will be lower, but the duration of those irritations will be longer.
     


  7. Sailgunner

    Sailgunner

    Joined Jun 4, 2004
    813 posts, 26 likes
    Hunter 410
    US Punta Gorda
    I worked on it a little. Installed some hose between the mounts and the hull (actually not directly connected to the hull). It seems a little better but I think the noise follows the piping from the pump. What would probably help is a flexible connection to the pump but don't know of anything compatible with the boat piping. BTW it is an Aqua King pump.
     


  8. dlochner

    dlochner

    Joined Jan 11, 2014
    1,966 posts, 657 likes
    Sabre 362
    US Fair Haven, NY
    Do you have rigid PVC piping? There are ways to connect to hose to pipes, might take some time and head scratching the hardware store.
     



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