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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. G70C EXPLOSION PROOF BEVERAGE ALCOHOL PUMP g70C202A

    Flojet Pumps

    Explosion Proof beverage alcohol pump for high proof spirits

    G70C202A
    $623.00

    Little Explosion Proof Alcohol Pumps are the best for high proof beverage alcohol.

    All of the wetted parts are completely resistant to ethanol, alcohol and other low flash point flammable liquids. G70C202A


    The Model G70C is designed to be the ul...

    G70C ATEX Kalrez® Air Operated Diaphragm Pump for alcohol and high proof spirits Learn More
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  2. oberdorfer gear pump bronze 1/2

    Oberdorfer Pumps

    N994 12v DC Gear Pump

    N994H-H75
    $1,729.00
    12v DC Gear Pump. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.

    12 volt Gear ...

    1HP 12VDDC Learn More
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  3. oberdorfer 405m rubber impeller pump

    Oberdorfer Pumps

    Rubber Impeller Bronze Pump

    405M-04N26
    $1,203.00

    Oberdorfer rubber (flex) impeller pump with solid cast bronze housing. Close coupled Rubber Impeller Pumps are made of high quality bronze for maximum corrosion resistance. The rubber impeller is mounted on a separate stainless steel shaft which i...

    115v 1HP 1" ODP Learn More
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  4. oberdorfer 405m rubber impeller pump

    Oberdorfer Pumps

    Rubber Impeller Bronze Pump

    405M-04M35
    $1,616.00

    Oberdorfer rubber (flex) impeller pump with solid cast bronze housing. Close coupled Rubber Impeller Pumps are made of high quality bronze for maximum corrosion resistance. The rubber impeller is mounted on a separate stainless steel shaft which i...

    115v 3/4HP 1" TEFC Learn More
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  5. Oberdorfer 405MG-03UGY Gas Rubber Impeller Pump

    Oberdorfer Pumps

    Gas Rubber Impeller Pump

    405MG-03UGY
    $2,525.00

    Gas Engine Oberdorfer rubber (flex) impeller pump with solid cast bronze housing. Close coupled Rubber Impeller Pumps are made of high quality bronze for maximum corrosion resistance. The rubber impeller is mounted on a separate stainless steel sh...

    3HP engine 1" Learn More
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  6. bronze gear pump with motor n992

    Oberdorfer Pumps

    N992 Pump & Mtr.

    N992-F41
    $1,118.00
    Bronze gear pump. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life. Motor may not ...
    1/3HP 115v Learn More
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  7. Oberdorfer N993M-J07 N993 Bronze Pump Motor

    Oberdorfer Pumps

    N993 Bronze Pump & Motor

    N993M-J07
    $1,146.00
    Bronze Gear pump. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.

    Gear pumps ar...

    1/2 HP 115v Learn More
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  8. Flojet-G57-diaphragm-pump-PumpBiz.jpg

    Flojet Pumps

    Duplex Diaphragm pump

    G573205A
    $299.00
    Glass filled Polypropylene double diaphragm pump with FKM diaphragms and check valve seats. Springs are Hastalloy.

    Connections are 3/8" straight. Air connection is 1/4" BARB brass. Air operated diaphragm pumps used for cleaning chemicals an...

    3/8" FKM Learn More
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  9. Oberdorfer N993RM-J07 N993 Pump motor

    Oberdorfer Pumps

    N993 Pump & motor

    N993RM-J07
    $1,238.00
    Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.

    Gear pumps are positive displac...

    1/2HP 115/230v Relief Vavle Learn More
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  10. All-Flo A100-NA3-SS3E-000 Stainless Steel Air Operated Double Diaphragm Pump

    All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    A100-NA3-SS3E-B70
    $2,137.15

    Stainless Steel 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 fro...

    1" 316SS Learn More
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