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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. Portable Toilet Service Sytem

    Pumptec

    Portable Toilet Service Sytem

    80729
    $1,335.00

    Series 356U - M60 Pump 12 Volt 0-700 PSI. Waterhorse 80729 PWK-713-12V.

    Includes unloader, gun, and inlet filter. Does NOT include hose. This electric pressure washer cleaner is one work horse in the pressure washing business and in power washing...

    12VDC pressure pump Learn More
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  2. Hypro GCCN22V Cast Iron Gear Pump 1/4

    Hypro Pumps

    Cast Iron Gear Pump 1/4"

    GCCN22V
    $1,005.00
    Cast Iron Gear pump close coupled to a 1/3 hp Carbonator type motor. Includes adjustable relief valve. For lubricating liquids, not water.
    115v/230v Learn More
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  3. 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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  4. Oberdorfer N993R N993 bronze Gear pump

    Oberdorfer Pumps

    N993 bronze Gear pump

    N993R
    $1,019.20
    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 Learn More
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  5. Aquatec PVP55-Aquajet-ARV AquaJet RV Pump

    Aquatec Pumps

    AquaJet RV Pump

    PVP55-Aquajet-ARV
    Call For Price
    AquaJet RV water pump, high flow. 12 volt Variable speed RV water pump.Controls Pressure by Changing Motor Speed and therefore is nearly silent operation / no cycling. • Speeds Up As Demand Increases • Self-priming / Runs Dry • No Accumulator ...
    High Flow Water Pump 12v This Pump has been discontinued and is no longer available. See the related pumps section or give us a call for an alternative. Learn More
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  6. 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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  7. 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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  8. 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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  9. 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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  10. 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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