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Gear Pumps

Gear pumps, or rotary gear pumps, are positive displacement (or fixed displacement), meaning they pump a constant amount of fluid for each revolution. They consist of at least two separate and rotating gears with inter-meshing teeth. As these meshed teeth separate, they create a partial vacuum which is filled by the fluid being pumped. As the gears then continue to rotate the fluid becomes trapped and is carried around the casing to the discharge side of the pump. Here as the gear teeth begin to re-mesh the fluid is ejected creating a pumping action. Gear pump brands Oberdorfer Hypro Shertech

Typical Applications for Gear Pumps

  • Petrochemicals: Pure or filled bitumen, pitch, diesel oil, crude oil, lube oil etc.
  • Chemicals: Sodium silicate, acids, plastics, mixed chemicals, isocyanates etc.
  • Paint and ink.
  • Resins and adhesives.
  • Pulp and paper: acid, soap, lye, black liquor, kaolin, lime, latex, sludge etc.
  • Food: Chocolate, cacao butter, fillers, sugar, vegetable fats and oils, molasses, animal food etc.
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  1. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000

    $616.00
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings or honey production systems.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffecte...
  2. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000E

    $629.00
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the...
  3. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000ES3

    $608.00
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the...
  4. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000L

    $629.00
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the...
  5. Oberdorfer Pumps

    Bronze Pedestal Gear Pump w/ relief valve

    N9000LR

    $688.00
    Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by t...
  6. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000LS3

    $608.00
    Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the b...
  7. Oberdorfer Pumps

    12vdc Bronze Rotary Gear Pump w/ relief valve

    N991R-32A96

    $658.00
    Bronze gear pump 12v. 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 life. Gear pumps are pos...
    12vdc 1/4HP Learn More
  8. Oberdorfer Pumps

    N994 Gear Pump Only

    N994R-S15

    $699.00
    Gear Pump Only. No motor. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Gear Pump KIT. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long servi...
  9. Hypro Pumps

    Bronze Gear Pump W/Relief

    BBV1

    $699.00

    Bronze Pedestal Gear Pump, light duty with relief valve.

    Also see N2000 or N3000

    Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applicatio...

    Bronze 1/4" Learn More
  10. Oberdorfer Pumps

    Bronze Gear pump For Hydraulic Motor

    N993S5

    $612.00
    Pump end only, no motor. 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.

    Gear pump...

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