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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

    3/4" Bronze gear pump 1HP Oberdorfer

    N970H-N76

    $2,611.08
    Oberdorfer 3/4" Bronze rotary gear pump with relief valve and close coupled to a 1 HP 24VDC 1725 RPM motor. Often used to pump Diesel fuel. Pump housings and gears are made of top quality bronze, shafts are stainless steel 303. Bearings are made ...
    24vDC Learn More
  2. Oberdorfer Pumps

    3/4" Bronze gear pump 1HP

    N970H-N75

    $5,150.48
    3/4" Bronze rotary gear pump without relief valve and close coupled to a 1 HP 12VDC 1725 RPM motor. Often used to pump Diesel fuel. Pump housings and gears are made of top quality bronze, shafts are stainless steel 303. Bearings are made of high ...
    12vdc Learn More
  3. Oberdorfer Pumps

    3/4" Bronze gear pump 3/4HP

    N970H-M46

    $1,597.70
    3/4" Bronze rotary gear pump with relief valve and close coupled to a 3/4 HP 115v/1/60 1150 RPM TEFC motor. Shaft speed and flow are directly proportional. Motor HP needs to increase with a increase in pump pressure. The nature of a positive disp...
  4. 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...

  5. Hypro Pumps

    Bronze Gear pump PEO

    GCBN2V

    $899.00
    Bronze Gear pump for close coupling to a 1/3 hp Carbonator type motor.

    Includes relief valve. Pump end only. Replaces 6PA26

    1/4" no motor Learn More
  6. Oberdorfer Pumps

    3/4" Bronze gear pump 1HP

    N970H-N47

    $4,637.18
    3/4" Bronze rotary gear pump without relief valve and close coupled to a 1 HP 115v/1/60 1725 RPM TEFC motor.Pump housings and gears are made of top quality bronze, shafts are stainless steel 303. Bearings are made of high performance carbon-gra...
    115/230v ODP 1HP Learn More
  7. Oberdorfer Pumps

    Bronze gear pump Pedestal

    N3000RS15

    $1,357.20
    Bronze rotary gear pump with relief valve. Pedestal mounted bronze gear pump.

    See performance chart for HP required VS. motor RPM and pump performance.

  8. Oberdorfer Pumps

    Gear Fuel pump

    N1000S3

    $487.50
    1/4" Bronze rotary gear pump without relief valve. Used on simplex diesel fuel day tank. Replaces 1000B-28 and 1000B-19 Simplex diesel fuel sytems.
  9. 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
  10. 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
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