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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. All-Flo Pumps

    Aluminum Air Operated Double Diaphragm Pump

    A200-CA3-SS3E-000

    $6,908.55

    Aluminum AODD Pump 2" NPT. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Aluminum 2" connections are dual FNPT and Flange (ANSI 150#/DIN) design.

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  2. 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...
  3. 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...
  4. 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...
  5. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    A200-CA3-GG3N-B70

    $7,128.68

    316 Stainless Steel Diaphragm Pump 2"NPT. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. 316SS 2" connections are dual FNPT and Flange (ANSI 150#/DI...

    Stainless, Geolast, Nitrile 2 inch Learn More
  6. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    A200-C33-TT3T-B70

    $14,179.59

    Stainless Steel AODD Pump 2". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. 316SS 2" connections are dual FNPT and Flange (ANSI 150#/DIN) design.

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  7. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    SE-20

    $9,874.74

    2" Stainless Steel Air Operated Double Diaphragm Pump 2". FDA Santoprene diaphragm. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. 2" connections ar...

    316SS, Santo, EPDM 2" Learn More
  8. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KN-20

    $16,116.14

    PVDF Air Operated Double Diaphragm AODD Pump 2". Was KN-20 All-Flo prior to new model numbering system. Fluid chambers are PVDF Kynar, Intermediate body is Polypro.

    Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into,...

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