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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 N992RQ-F09 N992R Gear Pump EXP Motor

    Oberdorfer Pumps

    N992R Gear Pump & EXP Motor

    N992RQ-F09
    $2,094.95
    Explosion Proof Gear Pump with housings and gears are made of top quality bronze; shafts are from stainless steel 303. Hazardous Duty gear pump fitted with EXP motor. Bearings are designed of high performance carbon-graphite material selected f...
    1/3HP 115v Explosion Proof Learn More
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  2. Bronze rotary gear pump with electric motor and relief valve

    Oberdorfer Pumps

    N992R Gear Pump & Mtr & Relief

    N992R-F41
    $1,216.93
    Bronze rotary gear pump with relief valve, electric motor.Gear 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 resi...
    1/3HP 115v ODP Relief valve Learn More
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  3. oberdorfer gear pump

    Oberdorfer Pumps

    Bronze Pedestal Gear Pump w/ relief valve

    N7000R
    $1,357.20
    Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings. Pump flow is reversible.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid...
    3/4" Packed Learn More
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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 N991-F41 N991 Oberdorfer PUMP MTR.

    Oberdorfer Pumps

    N991 Oberdorfer PUMP & MTR.

    N991-F41
    $1,446.90
    Glycol circulation Pump by Oberdorfer is just one of hundreds of applications. 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 selec...
    1/3HP 115 Learn More
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  6. 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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  7. PumpBiz AP-33CSQM Wobble Stator Pump

    PumpBiz

    Wobble Stator Pump

    AP-33CSQM
    $536.00

    Wobble stator pump for thick liquids. 

    The progressive cavity pump is a positive displacement system that is extremely flexible in its usability in a variety of specialized fields with difficult pumping applications such as viscous and highly-abr...

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  8. 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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  9. Oberdorfer N991-32F41 N991 Oberdorfer Bronze gear pump motor

    Oberdorfer Pumps

    N991 Oberdorfer Bronze gear pump & motor

    N991-32F41
    $1,108.90
    Oberdorfer Bronze gear pump & motor. 3/8" 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 ser...
    115v 3/8" Learn More
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  10. Hypro GCBN2V Bronze Gear pump PEO

    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
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