Geared water pumps

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  • marvin harten
    Junior Member
    • Feb 2003
    • 26
    #1

    Geared water pumps

    Does anyone have any information on submersible geared water pumps that can be used to pump water into and out of a ballast chamber?

    Thanks.
    Marvin Harten
    Tags: None
    • Guest
      #2
      Re: Geared water pumps

      There are a few on the market. They vary in price, quality and size. What boat is it for?

        Comment

        • marvin harten
          Junior Member
          • Feb 2003
          • 26
          #3
          Re: Geared water pumps

          This is for a basic Akula type hull that is approx. 80" long with an 8.5" beam. It will take 4lbs. - 6lbs. of water as ballast. The boat is really a test bed for electric motor torpedoes and some other electronic and mechanical ideas.
          Thanks again.

          Marvin Harten

            Comment

            • Guest
              #4
              Re: Geared water pumps

              Okay- big boat.

              Geared pumps don't have a terribly high flow rate in relation to their size. A good pump is made by a company called Kavan. This pumps about 1.8 litres a minute, and can make about 40psi.

              You would probably want two of these running in parallel for a boat your size.

                Comment

                • johnredearth
                  SubCommittee Vendor Member
                  • Dec 2012
                  • 47
                  #5
                  Re: Geared water pumps

                  Hi

                  Try a simple valve instead of using a geared pump. [http://youtu.be/AQ8UrO42Mkg]

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