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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. Hypro 2330B-P Powerline Plus 2300 pump

    Hypro Pumps

    Powerline Plus 2300 pump

    2330B-P
    $1,761.60
    In today's market, hypro still remains the only true american manufacture of low flow and high pressure plunger pumps. All variations of these pumps are New Brighton, Minnesota, with the highest quality materials for high interval operation. All ...
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  2. Aquatec 5513-1E12-B636 5 chamber 12Vdiaphragm pump

    Aquatec Pumps

    5 chamber 12V diaphragm pump

    5513-1E12-B636
    $290.54

    12vdc 550 Series Super Flow Pump: Reverse Osmosis System Pump, High Powered RO / DI Reverse Osmosis Pump

    OPERATION: The 550 pumps can draw water from a holding tank and pressurizeit, or boost the pressure from a low pressure source. It is designe...

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  3. stainless steel gear pump with electric motor

    Hypro Pumps

    316SS Gear pump

    GMSV4A53
    $2,048.36

    316SS Rotary Gear pump. Ryton gears. Stainless steel gear pump for aggressive chemicals.

    Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. Bi-rotational allows for flow direct...

    3/4HP 230/460v , 1/2" Learn More
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  4. Hypro GMSV4A 316SS Gear pump

    Hypro Pumps

    316SS Gear pump

    GMSV4A
    $1,962.16

    316SS Rotary Gear pump end PEO*. 303 SS fasteners, Ryton gears. Stainless steel gear pump for aggressive chemicals.

    Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. Bi-rota...

    No motor, 1/2" Learn More
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  5. All-Flo CN-025B Conductive Nylon AODD Pump

    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...
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  6. Bronze Rotary Gear Pump w/ relief valve & Motor

    Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ relief valve & Motor

    N991RM-32F01
    $965.90
    Bronze Rotary Gear Pump. Includes electric motor. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long se...
    115v 1/4" Learn More
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  7. Hypro BB1 Bronze Pedestal Gear Pump

    Hypro Pumps

    Bronze Pedestal Gear Pump

    BB1
    $2,141.48

    Bronze Pedestal Gear Pump, light duty. Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applications, providing a nearly pulseless flow and ar...

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  8. Close Coupled Bronze Rotary Gear Pump w/ relief valve

    Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump w/ relief valve

    N991RN32-F08
    $1,145.30
    Bronze Rotary Gear Pump with electric motor. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service...
    Pump & 1/3HP Motor 115v 1/4" Learn More
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  9. Metering Pump 50-1000cc/min

    March Pumps

    Metering Pump 50-1000cc/min

    212
    20% Off Special Price $536.38 Regular Price $670.48
    Positive displacement chemical feed pumps designed for precision metering & accurate dispensing. Recommended for intermittent duty only. Flow rates can be precisely regulated while the pump is running by adjusting the flow control lever and loc...
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  10. Hypro B1 Bronze Pedestal Gear Pump

    Hypro Pumps

    Bronze Pedestal Gear Pump

    B1
    $1,939.52
    Bronze Pedestal Gear Pump, light duty with zerk grease fittings. Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applications, providing a n...
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