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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. Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump

    N999Q-J46

    $1,411.00

    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...
  2. Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump w/ relief valve

    N991RM-J07

    $984.00
    Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service life. Gear pumps are positive displacement pum...
    1/2HP 115/230v Learn More
  3. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ relief valve

    N991RM-F07

    $925.00
    Bronze gear pump with motor. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Includes relief valve. Bearings are designed of high performance carbongraphite material selected for wear resistance and long se...
    115/230v 1/3HP Learn More
  4. Hypro Pumps

    Bronze Gear pump 1/2 hp

    GCBN33V

    $1,379.39
    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 Learn More
  5. Hypro Pumps

    Bronze Gear pump 1/3 hp

    GCBN22V

    $1,260.19
    Bronze Gear pump close coupled to a 1/3 hp Carbonator type motor. 115v

    Includes relief valve.

    115v 1/4" Learn More
  6. Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump

    N999R-F41

    $699.00
    Bronze gear pump mounted to a 1725rpm 1/3 HP motor. Pump has relief valve.

    Features N999 Series:

    • Compact design eases installation and use in limited space areas.
    • Construction is bronze and stainless steel wetted components.
    • Close toleran...
    115v 1/3HP Learn More
  7. Oberdorfer Pumps

    DC Bronze Rotary Gear Pump

    N999R-C81

    $1,443.00
    Bronze 12v DC gear pump mounted to a 1200rpm 1/4 HP motor. Pump has relief valve.

    Features N999 Series:

    • Compact design eases installation and use in limited space areas.
    • Construction is bronze and stainless steel wetted components.
    • Close ...
    12 volt DC 1/4" Learn More
  8. Jabsco Pumps

    Bronze Pump 10gpm 115V

    11810-0003

    $1,020.00
    Bronze Utility pump, electric motor drive. For general transfer pumping where self-priming, 10gpm flow, debris tolerance and portable 115V AC operation is desired. Nitrile for oil based products. Neoprene for water and general purpose pumping. ...
    1/3HP Utility pump 115v Learn More
  9. Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump

    N999RM-F07

    $955.00
    Bronze gear pump mounted to a 1725rpm 1/3 HP motor. Pump has relief valve.

    Features N999 Series:

    • Compact design eases installation and use in limited space areas.
    • Construction is bronze and stainless steel wetted components.
    • Close toleran...
  10. Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump

    N999Q-32-J46

    $987.00

    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...

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