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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 Pumps

    Hot Oil Gear Pump Less Motor

    NG11V-PH

    $3,718.80

    NG NSF Listed Industrial Gear Pumps. Obsolete

    Gear pumps are recommended for non-abrasive, non-flammable liquids compatible with pump component materials. They can be used for liquid circulation, lubrication, pressure boosting, filtering, medium ...

  2. Oberdorfer Pumps

    Chemical Gear pump PEO

    S2101BCB-C1

    $2,282.28
    Highly Engineered Chemical Helical Gear pump designed to handle highly corrosive liquids that must be pumped under pressure. Pump End Only with close coupled mtr adapter. Its rugged, three-section, thru-bolt construction provides ease of servicin...
  3. Hypro Pumps

    Cast Iron Gear pump 1/4"

    GMCV2VA3

    $1,230.00

    Rotary Cast Iron Gear pump end. 303 SS fasteners, steel 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.

    Hypr...

    3/4HP 115/230v ODP 1/4" Learn More
  4. Oberdorfer Pumps

    Chemical Gear pump PEO

    S2101BCJ-C1

    $3,021.88
    Highly Engineered Chemical Helical Gear pump designed to handle highly corrosive liquids that must be pumped under pressure. Pump End Only with close coupled mtr adapter. Its rugged, three-section, thru-bolt construction provides ease of servicin...
  5. Hypro Pumps

    Cast Iron Gear pump PEO

    GMCV3VA

    $899.00

    Rotary Cast Iron Gear pump end. 303 SS fasteners, steel 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 ...

    No motor 3/8" Learn More
  6. Hypro Pumps

    Cast Iron Gear pump only

    MCN3A

    $5,071.99
    Rotary Cast Iron Gear pump end. 303 SS fastners, 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...

  7. Hypro Pumps

    CI gear pump 11 gpm

    C4V

    $1,493.69
    11 GPM Cast iron pedestal mounted gear pump. For oils and other lubricating liquids. Not for use on water. Vellumoid Gasket Material, FKM Lip Seal
  8. Hypro Pumps

    Rotary Gear pump only

    MCN6VC

    $1,479.60
    Rotary Gear pump end. Cast Iron with 303 SS fastners, CI 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.

    U...

  9. Hypro Pumps

    Rotary Gear pump only

    MBN6VC

    $4,353.08
    Rotary Gear pump end. 303 SS fastners, 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 pressure...

  10. Hypro Pumps

    Rotary Gear pump only

    MBN5VB

    $5,401.27
    Rotary Gear pump end. 303 SS fastners, 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 press...

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