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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-F09

    $1,311.70

    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

    Bronze Rotary Gear Pump & Motor

    N61K10G-01F02

    $721.50
    PUMP AND MOTOR. No relief valve.

    This Bronze Rotary Gear Pump is popular among OEM users. It is a diesel fuel transfer pump featuring an all bronze design and 303 stainless steel shafts with options of non-metallic gears and a variety of sha...

  3. Hypro Pumps

    Cast Iron Motor Mounted Gear Pump

    GCCV22V

    $999.00
    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, positive...

    115v CI Learn More
  4. Oberdorfer Pumps

    Bronze Rotary Gear Pump EXP

    N999-spec

    $1,560.00
    1/2 gpm diesel oil pump with EXP motor.

    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 perf...
  5. Hypro Pumps

    Bronze Gear pump 1/3 hp

    GCBN22V

    $866.00
    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

    $908.70
    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

    Close Coupled Bronze Rotary Gear Pump

    N999RM-F07

    $1,241.50
    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...
  8. Oberdorfer Pumps

    Bronze Rotary Gear Pump & Motor R

    N61010GR-01F02

    $677.30
    PUMP AND MOTOR with relief valve.

    This Bronze Rotary Gear Pump is popular among OEM users. It is a diesel fuel transfer pump featuring an all bronze design and 303 stainless steel shafts with options of non-metallic gears and a variety of shaft s...

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