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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. Riverside

    3 in. 3.5 hp briggs diaphragm pump

    DP3B

    $1,938.00

    Premium Series Diaphragm Pump

    Riverside Pumps’ rugged and reliable diaphragm pumps, often called “mudhogs”, are built to handle heavy mud and sludge thicker than any centrifugal pump can manage. Designed for tough jobs, they can also run dr...

  2. General Pump

    KE 3plex Plunger 24.2hp

    KEZ22A

    $11,256.35
    EKN Series, Triplex Plunger Pump with 316SS Manifold and Wetted Parts; 431 SS Valve Plate and Seat**Max. Inlet Pressure: 45 PSI**Max. Fluid Temperature: 140FPump Dimensions: 18.2" x 17.5" x 7.3" Click here to view more information on this pu...
  3. 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)

  4. Remco

    FatBoy Diaphragm Pump Bypass

    5518-2I1-94A

    $283.94

    THE PROFLO FATBOY® PUMPS UP THE VOLUME WITH 7GPM.

    FatBoy® Demanding industrial pump environments require precise engineering and quality components - the ProFlo FatBoy was designed with both. Liquid de-icing applications. To maximize the potent...

    7GPM 100PSI 12VDC FatBoy® Learn More
  5. 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
  6. AMT Pumps

    2" Diaphragm Trash Pump KIT

    338G-K6

    $3,007.94
    Mud pump. Pump KIT only, NO 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, diaphragm pu...
  7. 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...

  8. General Pump

    3Plex Plunger 43.1hp

    KF40A

    $12,922.40
    KLS Triplex Plunger Pump for Jetting. A heavy-duty industrial pump with a nickel-treated, spheroidal cast iron manifold. Rated for intermittent use. 900rpm
    • Three horizontal plungers
    • Vertically-arranged valves
    • Double V-shaped pressure packin...
    45GPM Learn More
  9. AMT Pumps

    2" Diaphragm Trash Pump KIT

    336G-K6

    23% Off Special Price $1,758.97 Regular Price $2,284.38
    Mud pump. Pump KIT only, NO 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, diaphragm pu...
  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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