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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. Hypro Pumps

    Cast Iron Motor Mounted with Relief Valve

    GCCV33V

    $1,003.00
    Cast Iron Gear pump close coupled to a 1/2 hp Carbonator type motor. Steel spur gears with steel shaft and CI shaft supports. Standard pressure relief valves that can be ported internally or externallyand adjusted.

    Shertech self-priming, posit...

    1/2HP 115/230v Learn More
  2. Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump

    N999Q-J46

    $1,834.30

    Features N999 Series:

    • Compact design eases installation and use in limited space areas.
    • Construction is bronze and stainless steel wetted components.
    • Close tolerance design allows for consistent performance
    • Helical gears for quiet operatio...
  3. 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...
  4. Hypro Pumps

    Bronze Gear pump 1/2 hp

    GCBN33V

    Call For Price
    Bronze Gear pump close coupled to a 1/2 hp Carbonator type motor. Bronze spur gears with 304 stainless steel shaft and carbon/graphite shaft supports. Standard pressure relief valves that can be ported internally or externallyand adjusted.

    She...

    3/8" 115v This Pump is no longer available. Please call us for possible alternatives Learn More
  5. Hypro Pumps

    Bronze Gear pump Head

    GCBN3V

    $1,000.00
    Bronze Gear pump head PEO. Will mount to a close coupled 1/2 hp Carbonator type motor. Bronze spur gears with 304 stainless steel shaft and carbon/graphite shaft supports. Standard pressure relief valves that can be ported internally or extern...
    3/8" Bronze Pump no motor Learn More
  6. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG4F 1/2

    $1,104.44
    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. Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump

    N999Q-32-J46

    $1,283.10

    Features N999 Series:

    • Compact design eases installation and use in limited space areas.
    • Construction is bronze and stainless steel wetted components.
    • Close tolerance design allows for consistent performance
    • Helical gears for quiet operation.

    Pu...

  8. Oberdorfer Pumps

    Bronze Gear Pump & Mtr

    N992RMS5-F01

    $1,231.23
    Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life. Includes relief valve in pump head...
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