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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. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG2F 1/8

    $996.50
    The SG series are gear pumps specially designed for high pressure applications. These pumps are recommended for use with liquids that have some lubricating qualities and are relatively free of abrasives and scale. These pumps mount vertically and...
  2. Barnes Pumps

    Sumbersible Grinder Pump

    SGV3042L

    $6,842.00

    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
  3. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG4F 1/4

    $1,065.69
    The SG series are gear pumps specially designed for high pressure applications. These pumps are recommended for use with liquids that have some lubricating qualities and are relatively free of abrasives and scale. These pumps mount vertically and...
  4. Graymills Pumps

    Vertical CI Centrifugal Pump & Mtr

    SG4F 1/2

    $1,104.44
    The SG series are gear pumps specially designed for high pressure applications. These pumps are recommended for use with liquids that have some lubricating qualities and are relatively free of abrasives and scale. These pumps mount vertically and...
  5. Hypro Pumps

    Bronze Gear pump

    GMBN2VA33

    $2,238.04
    Rotary Gear pump end. 303 SS fasteners, Ryton gears.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than one minute.

    Use for pres...

    1/4" 1/3HP 230/460v Learn More
  6. Hypro Pumps

    Bronze Gear pump 1HP

    GMBN3VA43

    $2,272.75
    Rotary Gear pump 3/8". 303 SS fasteners, Ryton gears.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than one minute.

    Use for pre...

    3/8" 3phase ODP Learn More
  7. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor

    N990J-W97

    $1,949.00
    Oberdorfer Close coupled bronze rotary gear pumps.
    • Bronze Construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • The pump drive shaft is connected to the motor shaf...
  8. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor

    N990K-W96

    $1,923.00
    Oberdorfer Close coupled bronze rotary gear pumps.
    • Bronze Construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • The pump drive shaft is connected to the motor shaft by ...
  9. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor

    N990K-X95

    $2,388.00
    Oberdorfer Close coupled bronze rotary gear pumps.
    • Bronze Construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • The pump drive shaft is connected to the motor shaft by ...
  10. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor

    N990K-Y97

    $2,478.00
    Oberdorfer Close coupled bronze rotary gear pumps.
    • Bronze Construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • The pump drive shaft is connected to the motor shaft by ...
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