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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 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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  2. 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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  3. Pulsafeeder LPB2MA-PTC1 Chemical Feed Pump 5GPD/250 PSI

    Pulsafeeder

    Chemical Feed Pump 5GPD/250 PSI

    LPB2MA-PTC1
    $1,102.95
    Chemical Feed Pump. The Series E Plus offers the option to choose between 4-20mAfor external pace inputs for automatic control. Chemical Feed Pump or metering pump.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • 4-20mA with stop function
    • Extern...
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  4. 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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  5. 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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  6. 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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  7. 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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  8. 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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  9. Flojet N5100-050A Diaphragm Pump 1.9GPM

    Flojet Pumps

    Diaphragm Pump 1.9GPM

    N5100050A
    $300.00
    Oil Resistant Acetyl Copolymer housing with Buna Elastomers. 5100-050A Flow rates to 1.9gpm and operating pressures 20 to 75psi, Duplex diaphragm design. Foam application. SALE!!!

    Max. air 80 PSI and .77 CFM For use on water like liquids.

    Buna Learn More
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  10. Flojet N5100-040 Diaphragm Pump 1.9GPM

    Flojet Pumps

    Diaphragm Pump 1.9GPM

    N5100040
    $290.00
    Oil Resistant Acetyl Copolymer housing with Santoprene, FKM, Geolast and Buna Elastomers. Flow rates to 1.9gpm and operating pressures 20 to 75psi, Duplex diaphragm design. Foam application. SALE!!!

    Max. air 80 PSI and .77 CFM

    Neoprene Learn More
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