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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. All-Flo Stainless 1/2" diaphragm pump A050-NA3-VV3V-000

    All-Flo Pumps

    Air Diaphragm pump Stainless

    A050-NA3-VV3V-000
    $1,867.80

    Stainless Steel Diaphragm Air AODD Pump 1/2". 

    All-Flo pneumatic diaphragm pumps are used throughout industry, chemical, paints, solvents and paints. Standard (Suction Right / Discharge Right). Made in USA.

    Lube-free air valve, Non-stalling, No ...

    1/2" Stainless Learn More
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  2. All-Flo Stainless 1/2" diaphragm pump A050-NA3-GT3N-S70

    All-Flo Pumps

    Air Diaphragm pump Stainless

    A050-NA3-GT3N-S70
    $1,867.80

    Stainless Steel Diaphragm Air AODD Pump 1/2". 

    All-Flo pneumatic diaphragm pumps are used throughout industry, chemical, paints, solvents and paints. Standard (Suction Right / Discharge Right). Made in USA.

    Lube-free air valve, Non-stalling, No ...

    1/2" Stainless Geolast Learn More
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  3. 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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  4. Pumptec 80010 Pumptec 12v 112T-075/M15 Sprayer Pump

    Pumptec

    112T-075/M15 Sprayer Pump

    80010
    $405.59
    Pumptecç—´ 12V DC spray pumps and systems make compact, efficient sprayers possible. With unmatched efficiency, Pumptecç—´ quiet pumps and systems replace gas engine-driven systems with 12V DC powered pumps to allow anywhere, anytime use. Sprayer...
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  5. Pumptec 80326 200PSI Spray Sytem 12V

    Pumptec

    200PSI Spray Sytem 12V

    80326
    $477.86
    Spray Pump Module 200 PSI. Basic Sprayer Pump System easily converts spot sprayer to a high-performance 200 PSI sprayer for tree spraying, ditch and fence line spraying, plus eave/overhand spraying. 114T PumpTec Pump, Nylon Body, FKM O-rings, Tefl...
    12VDC spray system Nylon body Learn More
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  6. 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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  7. 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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  8. 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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  9. 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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  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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