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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. Allflo_038 kynar pvdf plastic diaphragm pump

    All-Flo Pumps

    Kynar Air Operated Double Diaphragm Pump

    S038-SQK-SEKE-S70
    $1,124.37
    Kynar Air AODD Pump 3/8". PVDF Kynar body, Santoprene elastomers, PTFE Teflon 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. Often use...
    3/8" 9GPM Kynar Learn More
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  2. All-Flo KT-038 PP Air Operated Double Diaphragm Pump Bolted Series

    All-Flo Pumps

    PP Air Operated Double Diaphragm Pump Bolted Series

    KT-038
    $968.01
    PolyPro Air AODD Pump 3/8". 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 Materi...
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  3. All-Flo KV-038 PVDF Air Operated Double Diaphragm Pump

    All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KV-038
    $969.69
    Kynar PVDF Air AODD Pump 3/8". 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 Mat...
    Learn More
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  4. Air Diaphragm Pump

    All-Flo Pumps

    Air Diaphragm Pump

    A050-NAA-TTYT-S00

    $1,171.50

    Air Diaphragm Pump

    Aluminum 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. S = Standard (Suction Right / Discharge Right)Click ...

    1/2" Alum/Teflon Learn More
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  5. Air Diaphragm pump Aluminum

    All-Flo Pumps

    Air Diaphragm pump Aluminum

    A050-NAA-VVYV-S30
    $1,314.95

    Aluminum Diaphragm Air AODD Pump 1/2". 

    All-Flo pneumatic diaphragm pumps are used throughout industry, chemical, paints, solvents and paints. Standard (Suction Right / Discharge Right). Made in USA.

    Lube-free air valve, Non-stalling, No vent ho...

    1/2" FKM Learn More
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  6. All-Flo KN-5 PVDF Air Operated Double Diaphragm Pump

    All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KN-5
    $1,971.59

    PVDF AODD Pump 1/2". All-Flo diaphragm pump has Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into. A050-SPK-TTKT-S70 Kynar pneumatic pump. All plastic air system are corrosion resistant. For pumping aggressive chemic...

    Kynar TFE 1/2" Learn More
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  7. All-Flo KN-5E PVDF Air Operated Double Diaphragm Pump

    All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KN-5E
    $1,759.44

    PVDF air operated double diaphragm pump. AODD Pump 1/2". All-Flo 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,...

    Kyner EPDM Santoprene Learn More
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  8. All-Flo KN-5V PVDF Air Operated Double Diaphragm Pump

    All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    C050-SPK-VVKV-G70
    $2,005.26
    PVDF Kynar 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 KN-05 PVDF used in the KN model handles a wide range of chemic...
    1/2" Kynar Learn More
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  9. All-Flo BK-5V PP Air Operated Double Diaphragm Pump

    All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    C050-SPP-VVPV-G70
    $1,274.55
    PolyPro 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. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS from ....
    PolyPro FKM 1/2" Learn More
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  10. All-Flo BK-5 PP Air Diaphragm pump 1/2

    All-Flo Pumps

    PP Air Diaphragm pump 1/2"

    C050-SPP-TTPT-G70
    $1,161.74

    PolyPro AODD Pump 1/2". Double diaphragm or air operated diaphragm pump. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Model available in PP Click ...

    PolyPro Learn More
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