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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. Remco_demand pump

    Remco

    115v Demand Pump 1GPM

    3321-1E1-52C
    $206.41

    Diaphragm pump with automatic switch. Demand

    Demanding industrial electric pump environments require precise engineering and quality components葉he demand pump was designed with both. Demand pumps operated as a positive displacement pump which h...

    1GPM 60PSI 115AC Learn More
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  2. riverside homelite trash pump 121TP L1537Z L1602y tp3 seal tp2

    Riverside

    Shaft seal pump repair kit

    627131A
    $124.00
    Shaft seal for Riverside Homelite 3" 2" trash pump and S3, repair kit. Includes both halves of the seal. 62713-1A
    3" Learn More
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  3. riverside homelite trash pump L1605Z tp4 seal 46150

    Riverside

    Shaft seal pump repair kit

    46150
    $103.00
    Shaft seal for Riverside Homelite 4" trash pump, repair kit. Includes both halves of the seal. L1605Z
    4" pump seal Learn More
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  4. Hypro GMCV2VA3 Cast Iron Gear pump 1/4

    Hypro Pumps

    Cast Iron Gear pump 1/4"

    GMCV2VA33T
    $1,123.00

    Rotary Cast Iron Gear pump with electric motor. 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 o...

    3/4HP 230/460v TEFC 1/4" Learn More
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  5. Oberdorfer N993R N993 bronze Gear pump

    Oberdorfer Pumps

    3/8 bronze Gear pump

    N993R-03
    $1,259.70
    Pump Only PEO, no 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 pu...

    Pump Only PEO, Relief 3/8" ports Learn More
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  6. Remco_demand pump

    Remco

    Bypass Pump 2GPM

    3321-2E1-82B
    $206.41

    Industrial pump environments require precise engineering and quality components the bypass pump was designed with both. For its size, it is one of the most powerful and productive diaphragm pumps you can buy, pumping up to 2.0 gallons per minute. ...

    2GPM 60PSI 12v Learn More
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  7. 316SS Gear pump

    Hypro Pumps

    316SS Gear pump

    GMSV4A4
    $1,735.68

    316SS Rotary Gear pump with 1HP motor. 303 SS fasteners, 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. B...

    1/2" 1HP 115/230v Learn More
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  8. allflo_61zbq1r7sql._sl1000__4.jpg

    All-Flo Pumps

    Air Diaphragm pump Aluminum

    A100-NAA-TTYT-B30
    $2,800.50
    Aluminum Air AODD Pump 1". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Click here to Learn How to Size your Diaphragm Pump and for a Materi...
    Alum/ptfe/1" Learn More
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  9. Remco_Fatboy.jpg

    Remco

    Demand Pump 5.3GPM

    5537-1E3-58C
    $246.71

    Review New Model: 5537-1E1-65C

    Extreme Duty 115v --5.3gpm Demanding industrial pump environments require precise engineering and quality components the demand pump was designed with both. Demand pumps operated as a positive displacement pump whic...

    5.3GPM 60PSI 115v NPT Geolast Learn More
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  10. Hypro GMSV4A 316SS Gear pump

    Hypro Pumps

    316SS Gear pump

    GMSV4A23
    $1,735.68

    316SS Rotary Gear pump with 1HP motor. 303 SS fasteners, 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. B...

    1/2HP, 3phase Learn More
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