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Positive Displacement Pumps

These pumps are often thought of as high-pressure pumps. Their positive displacement of fluid and fixed volume are the result of the fluid being mechanically moved through their pump passage on a regular cycle. This means that regardless of the system they discharge into, the pressure and volume will remain constant. The power of the driving device and its speed, limit the volume and pressure.Positive Displacement pumps:Flow rates of GPD, CC/min to 100 GPM typically.Discharge pressures of a 1 to 1000 PSI.Low speed and fixed volume per cycle, they handle very viscid fluids well.Smaller than centrifugal pumps.Quiet, do not ad much heat to the fluid, suitable for shear sensitive fluids.Diaphragm pumps can easily pass solids, stringy and fibrous foreign matter. Are made in materials from CI to Titanium and PP, PVDF and PPS engineering resins.
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  1. Jabsco Pumps

    Run dry 24vdc

    23920-9323

    $615.00
    Jabsco pump. For general purpose pumping where self-priming and extended run dry capability are required. Liquid stored in the specially designed pumphead provides 10 minutes or more of run dry operation after liquid supply tank is empty. Heavy...
    23920-9 Learn More
  2. Jabsco Pumps

    Run dry 24vdc Washdown

    32605-0094

    $238.00
    This 4.0 GPM (15 LPM) Washdown Pump provides the boater of small to medium vessels with a cost conscious and size maximised higher pressure pump. With a sealed pump head and motor, this new model provides the same ease of installation as all Jabsc...
    Marine Washdown Learn More
  3. Jabsco Pumps

    Run dry 12VDC Pump

    23920-9423

    $517.30
    Jabsco pump 8gpm. For general purpose pumping where self-priming and extended run dry capability are required. Liquid stored in the specially designed pumphead provides 10 minutes or more of run dry operation after liquid supply tank is empty. He...
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