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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

    PP Air Operated Double Diaphragm Pump Bolted Series

    PV-038

    $648.14
    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. For handling large size solids order the Max-pass valve under accessor...
  2. 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
  3. 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...
  4. 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...
  5. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KE-15

    $8,250.00
    PVDF 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 .2...
  6. All-Flo Pumps

    Diaphragm Pump Kynar

    C100-NPK-TTKT-G70

    $3,623.27
    Diaphragm Pump Kynar 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. Replaces KN-10 All pumps carry a full 5 year manufacturers warranty. ...
    1" Kynar KN-10 Learn More
  7. 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
  8. 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
  9. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KN-10V

    $3,902.76
    PVDF 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 from .25” t...
  10. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KN-10E

    $3,252.86
    PVDF 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 from .25” t...
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