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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. Pulsafeeder

    3 GPD/100 PSI Metering Pump

    003-XA-AAAAXXX

    $511.50
    3 GPD / 11.36 LPD 100 PSI metering pump 115 vac. 7 strokes / minute max. .3 Amps full load.

    Dimensions: 6.75" x 8.875" x 7.25" (H x W x D)

  2. 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
  3. Hypro Pumps

    Cast Iron Gear Pump 1/2"

    GCCN33V

    $999.00
    Cast Iron Gear pump close coupled to a 1/2 hp Carbonator type motor. Use with lubricating liquids only, not water based.
    115/230v 1/2HP Learn More
  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
  5. 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
  6. 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
  7. 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
  8. Pulsafeeder

    68 GPD/60 PSI Metering Pump

    068-XA-AAAAXXX

    $693.00
    68 GPD / 257.38 LPD 100 PSI metering pump 115 vac. 51 strokes / minute max. 1.0 Amps full load.

    Dimensions: 6.75" x 8.875" x 7.25" (H x W x D)

  9. Pulsafeeder

    7 GPD/100 PSI Metering Pump

    007-XA-AAAAXXX

    $511.50
    7 GPD / 26.50 LPD 100 PSI metering pump 115 vac. 13 strokes / minute max. .42 Amps full load.

    Dimensions: 6.75" x 8.875" x 7.25" (H x W x D)

  10. Aquatec Pumps

    low flo booster pump

    6840-2J03-B201

    $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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