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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 AL-30T Double diaphragm pump Air Operated Double Diaphragm Pump

    All-Flo Pumps

    Air Operated Double Diaphragm Pump

    A300-NAA-TTYT-B30
    $6,979.50
    Aluminum AODD Pump 3". 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...
    Aluminum Teflon 3" Learn More
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  2. All-Flo AL-30V Double diaphragm pump Diaphragm Pump Air

    All-Flo Pumps

    Diaphragm Pump Air

    A300-NAA-VVYV-B30
    $10,017.15
    Diaphragm Pump Air. Aluminum AODD Pump 3". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Diaphragm Pump Air Models available in PP, PVDF, Nylon,...
    Aluminum FKM 3" Learn More
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  3. All-Flo SP-20 Stainless Steel Air Operated Double Diaphragm Pump

    All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    A200-C33-TT3T-B70
    $14,179.59

    Stainless Steel AODD Pump 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. 316SS 2" connections are dual FNPT and Flange (ANSI 150#/DIN) design.

    ...
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  4. All-Flo SE-20 Stainless Steel Air Operated Double Diaphragm Pump

    All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    SE-20
    $9,874.74

    2" Stainless Steel Air Operated Double Diaphragm Pump 2". FDA Santoprene 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. 2" connections ar...

    316SS, Santo, EPDM 2" Learn More
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  5. allflo_a050-spp-sspe-s70_1.jpg

    All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    A050-SPP-TTPT-S70
    $1,234.50
    PolyPro / Teflon 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. For handling large size solids order the Max-pass valve under...
    PolyPro / Teflon 1/2" Learn More
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  6. Barnes SGV3022L 111608 Grinder pump

    Barnes Pumps

    111608 Grinder pump

    SGV3022L
    $9,784.06

    Rugged and reliable SGV Series pumps provide continuous, maintenance-free operation while effectively handling objects such as plastic, rubber, disposable diapers, towels and clothing. High Head.

    3HP SGV Series Ideally suited for pressure s...

    3HP 230v/1 Learn More
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  7. 2HP 208v grinder pump

    Barmesa Pumps

    2" Grinder pump 2HP

    BGP200DS
    Call For Price

    Rugged and reliable BGP Series pumps provide continuous, maintenance-free operation while effectively handling objects such as plastic, rubber, disposable diapers, towels and clothing. High Head.

    2HP Series Ideally suited for pressure sewer s...

    This product has been discontinued. It has been replaced by BGP202DS Learn More
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  8. Air Operated Double Diaphragm Pump Bolted Series

    All-Flo Pumps

    Air Operated Double Diaphragm Pump Bolted Series

    A050-NAA-SSPE-S00
    $1,171.50
    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. Click here to Learn How to Size your Diaphragm Pump and for a Mate...
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  9. Barnes SGV3042L Sumbersible Grinder Pump

    Barnes Pumps

    Sumbersible Grinder Pump

    SGV3042L
    $9,784.06

    Rugged and reliable SGV Series pumps provide continuous, maintenance-free operation while effectively handling objects such as plastic, rubber, disposable diapers, towels and clothing.

    2HP SGV Series Ideally suited for pressure sewer systems,...

    3hp, 460v/3phase Learn More
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  10. All-Flo PE-038 PP Air Operated Double Diaphragm Pump Bolted Series

    All-Flo Pumps

    PP Air Operated Double Diaphragm Pump Bolted Series

    PE-038
    $601.31
    PolyPro Air AODD Pump 3/8" S038-SQP-SEPE-S70. 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 Pum...
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