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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. bronze gear pump with motor n992

    Oberdorfer Pumps

    N992 Pump & Mtr.

    N992-F41
    $1,118.00
    Bronze gear pump. 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. Motor may not ...
    1/3HP 115v Learn More
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  2. Oberdorfer N993RM-J07 N993 Pump motor

    Oberdorfer Pumps

    N993 Pump & motor

    N993RM-J07
    $1,238.00
    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.

    Gear pumps are positive displac...

    1/2HP 115/230v Relief Vavle Learn More
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  3. oberdorfer gear pump bronze 1/2

    Oberdorfer Pumps

    N994 Gear Pump & Mtr.

    N994H-N26
    $1,554.00
    Gear Pump. 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.

    Gear pumps are posit...

    1HP 115/230v Learn More
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  4. Hypro GMCV3VA Cast Iron Gear pump 1hp 3/8"

    Hypro Pumps

    Cast Iron Gear pump 3/8

    GMCV3VA4
    $1,826.07

    Rotary Cast Iron Gear pump 3/8". 303 SS fasteners, steel gears.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than one minute.

    Use...

    1HP 3/8" Learn More
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  5. Oberdorfer N993Q-J46 Bronze gear pump

    Oberdorfer Pumps

    Bronze gear pump

    N993Q-J46
    $1,749.00
    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.

    Gear pumps are positive displac...

    1/2HP 115/230v Learn More
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  6. Oberdorfer N991M-J07 N991 Gear PUMP motor

    Oberdorfer Pumps

    N991 Gear PUMP & motor

    N991M-J07
    $1,302.00
    Gear PUMP & motor. 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.

    Gear pumps a...

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  7. oberdorfer gear pump bronze

    Oberdorfer Pumps

    N994 Gear Pump & Motor

    N994H-J46
    $2,040.00
    Gear Pump. 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.

    Gear pumps are posit...

    1/2HP 115/230v 1/2" Learn More
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  8. Hot Oil Gear Pump

    Hypro Pumps

    Hot Oil Gear Pump

    NG7V
    $2,168.60

    NG NSF Listed Industrial Gear Pumps. OBSOLET

    Gear pumps are recommended for non-abrasive, non-flammable liquids compatible with pump component materials. They can be used for liquid circulation, lubrication, pressure boosting, filtering, medium p...

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  9. Hot Oil Gear Pump Relief Valve

    Hypro Pumps

    Hot Oil Gear Pump Relief Valve

    NG11V
    $2,600.00

    NG NSF Listed Industrial Gear Pumps. Obsolete

    Gear pumps are recommended for non-abrasive, non-flammable liquids compatible with pump component materials. They can be used for liquid circulation, lubrication, pressure boosting, filtering, medium ...

    Obs Learn More
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  10. Close Coupled Bronze Rotary Gear Pump w/ relief valve

    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
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