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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. Flojet Pumps

    Industrial Demand Pump

    2100-789

    $675.60
    Spray pump is a Duplex Diaphragm demand pump 115v. Use as a carpet cleaning machines, solar water pump or any other powered shower, sprinkler, misting system. Demand switch automatically turns the spray pump on and off when discharge valve is o...
  2. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG4E 1/2

    $1,121.05
    The SG series are gear pumps specially designed for high pressure applications. These pumps are recommended for use with liquids that have some lubricating qualities and are relatively free of abrasives and scale. These pumps mount vertically and...
  3. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG1B 1/25

    $750.21
    The SG series are gear pumps specially designed for high pressure applications. These pumps are recommended for use with liquids that have some lubricating qualities and are relatively free of abrasives and scale. These pumps mount vertically and...
  4. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG2B 1/8

    $886.03
    The SG series are gear pumps specially designed for high pressure applications. These pumps are recommended for use with liquids that have some lubricating qualities and are relatively free of abrasives and scale. These pumps mount vertically and...
  5. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG1A 1/25

    $640.80
    The SG series are gear pumps specially designed for high pressure applications. These pumps are recommended for use with liquids that have some lubricating qualities and are relatively free of abrasives and scale. These pumps mount vertically and...
  6. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG2A 1/8

    $934.20
    The SG series are gear pumps specially designed for high pressure applications. These pumps are recommended for use with liquids that have some lubricating qualities and are relatively free of abrasives and scale. These pumps mount vertically and...
  7. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG4E 1/4

    $1,072.62
    The SG series are gear pumps specially designed for high pressure applications. These pumps are recommended for use with liquids that have some lubricating qualities and are relatively free of abrasives and scale. These pumps mount vertically and...
  8. Flojet Pumps

    High Flow Booster System

    2840-000

    $689.00
    Designed to provide a constant water pressure of 40 PSI and flows to 4.5 GPM. The pump is fully automatic, with built-in inlet strainer, pressure switch, and check valve, and supplies a smooth flow from a trickle to full flow. 115v

    Includes cord ...

  9. Jabsco Pumps

    Diesel refueling pump

    18685-0000

    $813.00
    Jabsco rotary vane pump for diesel fuel and other fuel oils and light oils. Transfer pump for refuelling small sizes diesel powered vehicles 50 gal. from drums. Suitable for mounting to the following equipment: Excavators, Cranes, Road rollers (c...
    115v Learn More
  10. Aquatec Pumps

    115v Electric diaphragm pump

    5850-7E12-J574

    $281.78
    Electric diaphragm pump. These pumps are specifically designed for mobile low flow or low voltage applications such as Expreso coffee, water systems, ice makers, pesticides and fertilizers. Pressure switch set at 60 PSI. Connections are 3/8 " Joh...
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