Gear Pump / Internal Gear Pumps

The Workhorse of Countless Manufacturing Processes

The internal gear pumping principle was invented by Jens Nielsen, one of the founders of Viking Pump. It uses two rotating gears which un-mesh 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 on either side of a crescent to the discharge side, and then the gears re-mesh to discharge the fluid.

Features & Benefits

Reliable and Easy to Maintain:

Only two moving parts.

Adjustable End Clearance:

For low or high viscosities, high temperatures, or to compensate for wear over time.

Shaft Seal Options:

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

Porting Options:

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

Minimal Pulsation:

For accurate flow measurement.

One Shaft Seal:

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

Compact, Close-Coupled Options:

For motor speed operation or with gearmotors.


Max. Capacity:

to 1,600 GPM (365 M³/Hr)

Max. Pressure:

to 250 PSI (17 BAR)

Viscosity Range:

28 to 2,000,000 SSU (1 to 440,000 cSt)

Temperature Range:

-120°F to +800°F (-85°C to +430°C)

Universal Seal

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Jacketed Universal Seal

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Universal Mag Drive

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XPD 676 Pump

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Hygienic Series

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Electrically Heated

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Motor Speed

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Metric Motor Speed

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Mag Drive Motor Speed

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Heavy Duty Alloy

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General Purpose

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Motor Mounted General Purpose

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Abrasive Liquid

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