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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

    Bronze Gear Pump & Mtr

    N992RMS5-F01

    $1,231.23
    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. Includes relief valve in pump head...
  2. Jabsco Pumps

    Diesel refueling pump

    18685-0000

    $813.00
    Jabsco rotary vane pump for diesel fuel and other fuel oils and light oils. Transfer pump for refuelling small sizes diesel powered vehicles 50 gal. from drums. Suitable for mounting to the following equipment: Excavators, Cranes, Road rollers (c...
    115v Learn More
  3. All-Flo Pumps

    Double Diaphragm Pump Exp Cycle Count

    SE-05-A43-10E

    $2,016.30
    316 SS AODD Pump 1/2". Installed option Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Counting the number of cycles provides a method of measuring how much flui...
  4. Hypro Pumps

    Bronze gear pump

    GPBN2V

    $1,917.86

    5 GPM 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.

    For smaller gear pumps see Ligh...

  5. Hypro Pumps

    Bronze gear pump 19 gpm

    BB5

    $2,671.12
    19 GPM Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Shaft seal is a packing. Do not use pulley drive.
  6. Hypro Pumps

    Fat Fryer Cooking Oil Pump

    GN63

    $3,246.52
    Hot Oil Cooking Pump Head, Fat Fryer / Filter, with close coupled Motor HP 1/3. NSF Carbonator Close Coupled Gear Pumps. NSF paint Color White on outer surfaces. Hot glycol or heat transfer liquids. Steel gears.

    • Pumps can operate bi-directio...

    gn hot oil Learn More
  7. Hypro Pumps

    Bronze gear pump

    GPBN3V

    $1,610.51
    11 GPM 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.
    1/2" Learn More
  8. Hypro Pumps

    Carbonator-Mount Hot Oil

    GN60

    $2,160.49
    NSF Carbonator Close Coupled Gear Pumps, painted White epoxy paint. Hot Oil Cooking Pump Head, Fat Fryer / Filter, Recommended Motor HP 1/3. NSF paint Color White on outer surfaces. Steel gears.

    • Pumps can operate bi-directionally (15 PSI max....

    Pump Only Learn More
  9. Hypro Pumps

    Bronze gear pump

    GPBN4V

    $1,645.57
    11 GPM Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Exellent for water based fluids. Ryton PPS spur gears provide quiet operation and chemical compatibility. No metal to metal contact.
    3/4" Learn More
  10. All-Flo Pumps

    Nylon AODD Pump 1/4".

    RD-025B

    $563.00
    Nylon AODD Pump 1/4". 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 from .25...
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