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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. AMT Pumps

    2" Electric Diaphragm Trash Pump

    338E-96

    23% Off Special Price $2,646.64 Regular Price $3,437.19

    New model 338E-96 Powered by 1.5HP electric motor. AMT 2" Diaphragm pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. ALSO AVAILABLE IN 1-PHASE,115/230V Often referred to as ...

    1.5HP 115/230v Learn More
  2. All-Flo Pumps

    Aluminum Air Operated Diaphragm Pump

    AL-30E

    $3,110.25
    Aluminum AODD Pump 3". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS from .2...
    Aluminum EPDM 3" Learn More
  3. Remco

    12vdc Bypass Pump 4GPM

    5516-2E6-63A

    $214.92

    New Model Number to Review: 5536-2E1-63B

    12v diaphragm pump with by-pass. Quick Connect QD ports accept various size fittings. Industrial pump environments require precise engineering and quality components - the demand pump was designed with bot...

    4GPM 60PSI 12VDC Buna QD Bypass Learn More
  4. 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)

  5. Remco

    115v Demand Pump 4GPM

    5536-1E1-58C

    $325.00

    Demanding industrial pump environments require precise engineering and quality components. The demand pump was designed with both. Demand pumps operate as a positive displacement pump which has a pressure switch built in. When flow is open the pum...

    4GPM 60PSI 120v Learn More
  6. AMT Pumps

    2" Gas Powered Diaphragm Pump

    69-G633

    23% Off Special Price $2,045.31 Regular Price $2,656.25

    Mud pump. Powered by 4 HP Honda GX 120 Engine. AMT 2" Diaphragm pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps, mudhog or Sludge pumps, diap...

    Honda GX120 Learn More
  7. AMT Pumps

    2" Diesel Pump

    336Z-96

    23% Off Special Price $3,876.93 Regular Price $5,034.98
    2" Mud pump. Powered by 4.8 HP Hatz diesel Engine, Electric Start. AMT 2" Diaphragm pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps, mudho...
  8. Remco

    12v Demand Pump 5.3GPM

    5537-1E3-82B

    $280.80

    Engineered to withstand the most rigorous and punishing duty-cycles, the Remco Professional Grade 5500 series pump is a top of the line performer.

    Made in the USA
    Professional Grade
    Factory tested performance and efficiency
    Superior vertical p...
    5.3GPM 60PSI 12v NPT Geolast Learn More
  9. Riverside

    3 in. Honda diaphragm pump

    DP3H

    $2,130.00

    Diaphragm pumps are positive displacement pumps. They pump a specific volume for each pump cycle. Diaphragm pumps move fluids more slowly than centrifugal pumps, but can handle mud and larger amounts of solids including abrasive materials. They al...

    5.5 hp Honda engine Learn More
  10. Remco

    100PSI Bypass

    5538-1i1-63A

    $306.88

    NEW MODEL NUMBERS TO REVIEW: 5518-2I1-94A or 5538-2I1-94A

    THE PROFLO FATBOY® PUMPS UP THE VOLUME WITH 5.3gpm. Demanding industrial pump environments require precise engineering and quality components the ProFlo FatBoy® was designed with both. T...

    5.3/gpm 100psi 12VDC Learn More
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