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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. 24vDC gear pump and motor oberdorfer bronze

    Oberdorfer Pumps

    N992R Gear Pump & Mtr

    N992R-C82
    $2,103.53
    24vDC gear pump and 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. Inclu...
    1/4HP 24vDC Learn More
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  2. Adjustable mechanical feed rate

    Stenner

    Adjustable mechanical feed rate, dual head dual control 50GPD

    100DM4
    $694.00
    G.H. Stenner & Company offers a complete line of highly reliable peristalic chemical feeders. Use for grease trap enzymes, algaecide, biocide, biocidal, antimicrobial, chlorination - chlorine sanitizers and disinfectants injection, cooling towe...
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  3. Oberdorfer N991R-32 N991 Bronze gear pump PEO

    Oberdorfer Pumps

    N991 Bronze gear pump PEO

    N991R-32
    $596.70

    Bronze gear pump

    NO motor. 1/4" Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Include relief valve built in. Bearings are designed of high performance carbon-graphite material selected for wear resis...

    Pump End ONLY Learn More
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  4. Oberdorfer N992 N992 Gear Pump PEO

    Oberdorfer Pumps

    N992 Gear Pump PEO

    N992
    $825.57

    Gear Pump pump end only, 1/4". 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. Incl...

    3/8" Bronze Pump Only Learn More
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  5. Aquatec 6840-2J03-B331 low flo booster pump

    Aquatec Pumps

    low flo booster pump

    6840-2J03-B331
    $290.54

    • Toughest, most durable pump on the market • Adjustable max. outlet psi.(regardless of feed pressure) • Expels trapped air (no more air locks) • Can be mounted with pump head up or down • More flow at extremely low inlet pressures • New motor ve...

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  6. Aquatec 6840-2J03-C221 low flo booster pump

    Aquatec Pumps

    low flo booster pump

    6840-2J03-C221
    $290.54

    • Toughest, most durable pump on the market • Adjustable max. outlet psi.(regardless of feed pressure) • Expels trapped air (no more air locks) • Can be mounted with pump head up or down • More flow at extremely low inlet pressures • New motor ve...

    Learn More
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  7. Aquatec 6840-2JM3-B221 low flo booster pump

    Aquatec Pumps

    low flo booster pump

    6840-2JM3-B221
    $290.54

    • Toughest, most durable pump on the market • Adjustable max. outlet psi.(regardless of feed pressure) • Expels trapped air (no more air locks) • Can be mounted with pump head up or down • More flow at extremely low inlet pressures • New motor ve...

    Learn More
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  8. Aquatec 6840-2P01-B221 low flo booster pump

    Aquatec Pumps

    low flo booster pump

    6840-2P01-B221
    $290.54

    • Toughest, most durable pump on the market • Adjustable max. outlet psi.(regardless of feed pressure) • Expels trapped air (no more air locks) • Can be mounted with pump head up or down • More flow at extremely low inlet pressures • New motor ve...

    Learn More
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  9. Little Giant 555110 Flexible impeller pump PP-1S

    Little Giant Pumps

    Flexible impeller pump PP-1S

    555110
    $324.54

    Non-Submersible, Self-Priming Stainless Steel Transfer Pump This lightweight, self-priming, portable pump with stainless steel pump head can be used to empty waterbeds, drain water heaters or aquariums, pump out a basement, transfer water to an...

    115v AC Learn More
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  10. Dual Head Adjustable mechanical feed rate 120GPD

    Stenner

    Dual Head Adjustable mechanical feed rate 120GPD

    170DM4
    $699.00
    G.H. Stenner & Company offers a complete line of highly reliable peristalic chemical feeders. Use for grease trap enzymes, algaecide, biocide, biocidal, antimicrobial, chlorination - chlorine sanitizers and disinfectants injection, cooling towe...
    6-120GPD Learn More
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