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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. Oberdorfer Pumps

    1.25" Bronze gear pump

    N11500-21

    $1,642.00
    1 1/4" Bronze rotary gear pump without relief valve. Pedestal mount pump only. Upper drive shaft location. See performance graph for flow rates vs motor RPM and HP (under image tab) . If used above 900 RPM, then duty cycle is limited to intermitt...
    Up to 55GPM Learn More
  2. Oberdorfer Pumps

    1.25" Bronze gear pump

    N11500S5

    $1,748.00
    1 1/4" Bronze rotary gear pump without relief valve. Pedestal mount pump only. Upper drive shaft location. See performance graph for flow rates vs motor RPM and HP (under image tab) . If used above 900 RPM with non-lubricating fluid, then duty ...
    Up to 55GPM FKM Lip seal Learn More
  3. Oberdorfer Pumps

    1.25" Bronze gear pump

    N1100XN46

    $3,655.00
    1 1/4" Bronze rotary gear pump with relief valve and close coupled to a 1 HP ODP motor.

    Use to pump oil and other viscous thick liquids.

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

    1.25" Bronze gear pump PEO

    N1100

    $1,410.00
    1 1/4" Bronze rotary gear pump with relief valve and to be close coupled to a 1 HP 56C to 3HP 182TC motors of electric or hydraulic type.

    Use to pump oil and other viscous thick liquids as well as diesel and all the de-icing fluids. Uses such as ...

    NO motor Learn More
  5. Oberdorfer Pumps

    1.25" Bronze gear pump

    N1100W-T98

    $2,159.00
    1 1/4" Bronze rotary gear pump with relief valve and close coupled to a 1 1/2 HP TEFC motor.

    Use to pump oil and other viscous thick liquids, De-icing fluids.

    1.5HP 230/460v Learn More
  6. Oberdorfer Pumps

    18 GPM CI GEAR PUMP & PED

    18GB1111S

    $1,226.00
    Medium duty CI gear pump with relief valve and pedistal for long coupling. Mechanical sealed, bronze bearings. CW rotation.

    b>Features:

    1. Shafts: Ground and polished steel.
    2. Helical Gears: For quiet running.
    3. Housing: Of close grain cast iron. Three...
  7. Hypro Pumps

    Bronze gear pump

    GPBN6V

    $1,322.80
    Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Excellent for water based fluids. Ryton PPS spur gears provide quiet operation and chemical compatibility. No metal to metal contact.
  8. Hypro Pumps

    Cast Iron gear pump

    BPCV6V

    $823.93
    11 GPM Cast Iron pedestal mounted gear pump. For oils and other lubricating liquids. Not for use on water.
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