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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. Graco Pumps

    24v Electric Fuel Transfer 260021

    FP24 Automatic

    $505.00
    24v Electric Fuel Transfer pump kit 260021, includes 260082 Regular gas / diesel nozzle with auto shut-off

    Features:

    • Manufacturer recognized and designed for gasoline, diesel fuel, kerosene and fuel oil (FP115). OPTIONAL flow meter available.
    • ...
    260021 Learn More
  2. 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
  3. 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
  4. 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
  5. Graco Pumps

    24v Electric Fuel Transfer

    FP24-M

    $428.00
    24v Electric Fuel Transfer pump kit, includes 260079 Regular gas / diesel Manual nozzle.

    Features:

    • Manufacturer recognized and designed for Methanol
    • Positive displacement, self priming gear pump design
    • Built in relief valve and strainer
    • Speci...
    260020 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. 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...

  9. 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
  10. 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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