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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 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...
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  2. All-Flo - A100-FPK-SSKE-S70: PVDF Air Operated Double Diaphragm

    All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    A100-FPK-SSKE-S70
    $3,252.86

    Kynar PVDF Air AODD Pump 1". Chemical double diaphragm pump made in USA. Featuring All-Flo's 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...

    1" KE-10 kynar Santo Learn More
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  3. Air Diaphragm Pump

    All-Flo Pumps

    Air Diaphragm Pump

    AE-15
    $1,694.55
    Air Diaphragm 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. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS from .2...
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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. allflo_61zbq1r7sql._sl1000__3.jpg

    All-Flo Pumps

    Air Diaphragm pump Aluminum

    A100-NAA-VVYV-000
    $2,098.80
    Aluminum Air 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. Click here to Learn How to Size your Diaphragm Pump and for a Materi...
    Alum/FKM/1" Learn More
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  7. All-Flo KE-15 PVDF Air Operated Double Diaphragm Pump

    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...
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  8. All-Flo - A200-FPP-TTPT-470: PolyPro 2" Diaphragm Pump

    All-Flo Pumps

    PolyPro 2" Diaphragm Pump

    PT-20
    $7,899.81

    PolyPro 2" Diaphragm Pump, old PT-20. 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 a...

    Teflon diaphragm Learn More
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  9. All-Flo - A200-FPP-SSPE-470: PolyPro 2" Diaphragm Pump

    All-Flo Pumps

    PolyPro 2" Diaphragm Pump

    PE-20
    $6,596.64
    PolyPro 2" Diaphragm Pump, replaces PE-20. 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...
    Santoprene diaphragm Learn More
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  10. pvdf kynar air diaphragm pump by all-flo

    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,...

    2" Learn More
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