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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. H Series Sanitary & Hygienic

    All-Flo Pumps

    H Series Sanitary & Hygienic

    H050-THL-PTTT-G70
    $3,498.00
    1/2” (13mm) HDPE/ Polished 316L Stainless Steel. Suction lift capability may vary depending on the construction materials and application parameters. The range is from 16.4 feet dry to 30 feet in a primed condition. Tri Clamp Click here to ...
    Sanitary Learn More
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  2. allflo_c150-fpp-sspe-b70-2.jpg

    All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    C150-FPP-SSPE-B70
    $2,653.46
    PolyPro Air AODD Pump 1.5". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical, pneumatic pump for chemicals. Click here to Learn How to Size your D...
    PE-15 1-1/2" Learn More
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  3. All-Flo A025-SQP-STPE-Y70 Nylon Air Operated Double Diaphragm Pump

    All-Flo Pumps

    Nylon Air Operated Double Diaphragm Pump

    A025-SPK-TTKV-S70
    $584.79
    Nylon Air AODD Pump 1/4". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Replaces RDD-025 Models available in PP, PVDF, Nylon, Conductive Nylon, ...
    1/4" Learn More
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  4. G70C EXPLOSION PROOF BEVERAGE ALCOHOL PUMP g70C202A

    Flojet Pumps

    Explosion Proof beverage alcohol pump for high proof spirits

    G70C202A
    $623.00

    Little Explosion Proof Alcohol Pumps are the best for high proof beverage alcohol.

    All of the wetted parts are completely resistant to ethanol, alcohol and other low flash point flammable liquids. G70C202A


    The Model G70C is designed to be the ul...

    G70C ATEX Kalrez® Air Operated Diaphragm Pump for alcohol and high proof spirits Learn More
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  5. Flojet-G57-diaphragm-pump-PumpBiz.jpg

    Flojet Pumps

    Duplex Diaphragm pump

    G573205A
    $299.00
    Glass filled Polypropylene double diaphragm pump with FKM diaphragms and check valve seats. Springs are Hastalloy.

    Connections are 3/8" straight. Air connection is 1/4" BARB brass. Air operated diaphragm pumps used for cleaning chemicals an...

    3/8" FKM Learn More
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  6. All-Flo A100-NA3-SS3E-000 Stainless Steel Air Operated Double Diaphragm Pump

    All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    A100-NA3-SS3E-B70
    $2,137.15

    Stainless Steel AODD Pump 1". 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 fro...

    1" 316SS Learn More
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  7. All-Flo PB-15 PP Air Operated Double Diaphragm Pump

    All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    C150-FPP-GGPN-B70
    $2,593.98
    PolyPro AODD Pump 1 1/2". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS from...
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  8. PP Air Operated Double Diaphragm Pump

    All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    A050-SPP-SSPE-S70
    $644.28
    PolyPro Air AODD Pump 1/2". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Click here to Learn How to Size your Diaphragm Pump and for a Mater...
    PE-05 Learn More
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  9. All-Flo - A150-NAA-TTYT-B30: Aluminum Air Operated Diaphragm Pump

    All-Flo Pumps

    Aluminum Air Operated Diaphragm Pump

    A150-NAA-TTYT-B30
    $2,079.90
    Aluminum AODD Pump 1 1/2". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. 3/4" npt air supply. Models available in PP, PVDF, Nylon, Conductive Ny...
    Teflon Diaphragm Learn More
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  10. Air Operated Double Diaphragm Pump Bolted Series KE-05

    All-Flo Pumps

    Air Operated Double Diaphragm Pump Bolted Series KE-05

    A050-SPK-SSKE-S70
    $1,194.28

    Air AODD Pump 1/2". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Replaces  KE-05

    FOR SOFTWASHING, ROOF CLEANING THE ALL-FLO 1/2" KYNAR AIR DIAPHR...

    Kynar 1/2" Learn More
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