Home // Products // External Gear Pumps

External Gear Pumps

The Ultimate Solution For High Pressure Pumping

The external gear pumping principle uses two rotating gears which unmesh at the suction side of the pump to create a vacuum which pulls fluid into the pump.  The spaces between the gear teeth transport the fluid along the outer perimeter of the housing to the discharge side, and then the gears re-mesh at the center to discharge the fluid.  The gears are supported by bearings on both sides, which allows high discharge pressure capabilities.

Features & Benefits

  • Higher Pressure Capabilities

    Wifth shaft support on both sides of the gears.

  • Multi-Section Pumps

    Use one motor for multiple pumping applications, blending liquids, or splitting flows to different uses.

  • Shaft Seal Options

    Including lip seal, component seal, cartridge seal and sealless mag drive options.

  • Porting Options

    Viking's broadest selection of port locations, configurations, and types.

  • Compact, Close Coupled Options

    For motor speed operation or with gearmotors.

  • Minimal Pulsation

    For accurate flow measurement.

  • Reliable and Easy to Maintain

    With only two moving parts

  • One Shaft Seal

    More reliable and lower cost than two used on timed lobe and screw pumps.


Max. Capacity: 
to 190 GPM (45 M3/Hr)
Max. Pressure: 
to 2,500 PSI (170 BAR)
Viscosity Range: 
28 to 1,000,000 SSU (1 to 250,000 cSt)
Temperature Range: 
-40°F to +450°F (-40°C to +230°C)