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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 N970H-N76 3/4 Bronze gear pump 1HP Oberdorfer

    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 ...
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  2. Oberdorfer N970H-N75 3/4 Bronze gear pump 1HP

    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
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  3. Oberdorfer N970H-M46 3/4 Bronze gear pump 3/4HP

    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...
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  4. Oberdorfer N61K10G-01F02 Bronze Rotary Gear Pump Motor

    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...

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  5. Oberdorfer N970H-N47 3/4 Bronze gear pump 1HP

    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
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  6. Bronze gear pump Pedestal

    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.

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  7. Oberdorfer N1000S3 Gear Fuel pump

    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.
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  8. Oberdorfer N61K10G-01C33 Bronze Rotary Gear Pump Motor

    Oberdorfer Pumps

    Bronze Rotary Gear Pump & Motor

    N61K10G-01C33
    $716.30
    PUMP AND MOTOR, no relief valve.

    This Bronze Rotary Gear Pump is popular among OEM users like generator Onan. 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...

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  9. Oberdorfer N61010GR-01F02 Bronze Rotary Gear Pump Motor R

    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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  10. Oberdorfer N61K10G-01 Bronze Rotary Gear Pump End

    Oberdorfer Pumps

    Bronze Rotary Gear Pump End

    N61K10G-01
    $302.90
    PUMP END ONLY

    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 shaft.

    Special Features:

    • Bronze Body
    • Helical Gears for Quiet Operation
    • Self-...
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