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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. Tsurumi

    Diaphragm Trash pump

    TD4-200

    $2,275.00
    Diaphragm mud trash pumps. Honda powered diaphragm trash pumps are designed to be reliable, easy to start, easy to prime, easy to maintain and are built to last. QUALITY 4-STROKE Honda GX ENGINES with OHV, and a transistorized pointless ignition ...
    Honda 4HP GX120 Learn More
  2. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    ST-15

    $3,486.62
    Stainless Steel 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 31...
    Teflon Dia. 1.5" Learn More
  3. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    C100-NPP-GGPN-G70

    $1,739.24
    PolyPro 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...
    NC-10 Learn More
  4. Tsurumi

    Diaphragm Trash pump

    TD4-300

    $2,175.00
    Diaphragm mud trash pumps. Capable of continuous dry operation for seepage dewatering. Handles sand, mud, and sludge.
    • Heavy-duty Honda gasoline engine with oil sensor delivers high power from a compact, reliable design.
    • Two-ply neoprene diap...
    Honda 4 HP GX120 Learn More
  5. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    C100-NPP-SSPE-G70

    $2,034.00

    PolyPro 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. Replaces BK-10E. Non-electrical. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and...

    BK-10E Learn More
  6. All-Flo Pumps

    Conductive Nylon AODD Pump

    CN-025B

    $513.15
    Although the air powered pump eliminates ignition from electrical motors and internal combustion engines when pumping flammable fluids there is still the possibility of static electrical charge build up on the outside of the pump. All-flo now p...
  7. All-Flo Pumps

    Stainless Steel Air Operated Diaphragm Pump

    A150-N33-SS3E-B70

    $7,914.95
    Stainless Steel 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 31...
    Santo Diaphragm Learn More
  8. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    SB-15

    $4,283.40
    Stainless Steel 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 316S...
  9. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    A150-F33-TT3T-B70

    $9,458.88
    Stainless Steel 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 31...
  10. All-Flo Pumps

    Air Operated Double Diaphragm Pump

    AL-30

    $3,366.00
    Air Diaphragm 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. Geolast is a nitrile and polypropylene blend. When checking for chemical re...
    Aluminum 3" Learn More
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