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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-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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  2. PumpBiz APM-44CSFM-3 WOBBLE STATOR PUMP 3 phase MOTOR

    PumpBiz

    WOBBLE STATOR PUMP & 3 phase MOTOR

    APM-44CSFM-3
    $4,394.78
    Liberty Pumps are backed by over fifty years of progressive cavity pump product sales and technical service experience. American Pump Series Progressive Cavity Pumps are designed with a singular helical rotor that eccentrically turns within a dou...
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  3. Hypro GMCV3VA Cast Iron Gear pump 1hp 3/8"

    Hypro Pumps

    Cast Iron Gear pump 3/8

    GMCV3VA4
    $1,114.00

    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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  4. Oberdorfer N993C-M26 Bronze gear pump

    Oberdorfer Pumps

    Bronze gear pump

    N993C-M26
    $1,298.70
    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.

    Gear pumps are p...

    3/4HP 115/230v Learn More
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  5. Oberdorfer N994R-S15 Gear pump N994 Gear Pump Only

    Oberdorfer Pumps

    N994 Gear Pump Only

    N994R-S15
    $1,069.90
    Gear Pump Only. No motor. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Gear Pump KIT. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long servi...
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  6. Oberdorfer N994S15H-M95 N994 Gear Pump with motor

    Oberdorfer Pumps

    N994 Gear Pump with motor

    N994S15H-M95
    $1,493.70
    Gear Pump bronze with 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 ...

    3/4HP 230/460v Bronze / FKM Learn More
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  7. Hot Oil Gear Pump

    Hypro Pumps

    Hot Oil Gear Pump

    NG7V
    $3,802.32

    NG NSF Listed Industrial Gear Pump (OBSOLETE)

    The Hypro NG7V industrial gear pump is designed for non-abrasive, non-flammable liquids that are compatible with pump component materials. Ideal for fluid circulation, lubrication, pressure boosting, ...

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  8. stainless steel gear pump with electric motor

    Hypro Pumps

    316SS Gear pump

    GMSV4A53
    $2,048.36

    316SS Rotary Gear pump. Ryton gears. Stainless steel gear pump for aggressive chemicals.

    Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. Bi-rotational allows for flow direct...

    3/4HP 230/460v , 1/2" Learn More
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  9. Hot Oil Gear Pump Relief Valve

    Hypro Pumps

    Hot Oil Gear Pump Relief Valve

    NG11V
    $4,320.00

    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. Hypro GMCV2VA3 Cast Iron Gear pump 1/4

    Hypro Pumps

    Cast Iron Gear pump 1/4"

    GMCV2VA3
    $1,230.00

    Rotary Cast Iron Gear pump end. 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.

    Hypr...

    3/4HP 115/230v ODP 1/4" Learn More
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