Viking Pump Authorized Service Center

Viking Pump manufactures positive displacement pumps and accessories for industrial and OEM pumping applications.

For more information on anyone of them, please visit their respective Product Page.

Other Viking Products Available

  • Internal Gear Pumps
  • External Gear Pumps
  • Rotary Lobe Pumps
  • Vane Pumps
  • Custom Solutions
  • Fluid Power Products
  • Gear Reducers
  • Basket Strainers
  • Power Load Monitors

The Internal Gear Pump

The internal gear pump uses two rotating gears which un-mesh at the suction side of the pump to create voids which allow atmospheric pressure to force 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.  Viking’s internal gear design has an outer drive gear (rotor- shown in orange) which turns the inner, driven gear (idler-shown in white).

Rogers Machinery Company, Inc. - Viking Universal Seal Series Internal Gear Pump

Universal Seal Series Internal Gear Pump

Design Features

The Universal Seal series pumps are similar to the Heavy Duty series, offering thrust control and adjustable rotor clearances to compensate for wear and viscosity.

An enlarged bearing housing at the rear of the pump provides easy drive-end access, and accepts various sealing options including:

  • packing
  • component mechanical seals
  • cartridge single-mechanical seals
  • cartridge double-mechanical seals, and
  • cartridge triple-lip seals.

This allows drive-end access for maintenance or replacement of cartridge seals without opening the head and pulling the rotor/shaft.  Some sizes also offer behind-the-rotor component mechanical seals.

Ports are available in a variety of 90- and 180-degree configurations.  Integral pressure relief valves are standard.

External Gear Pumps

The external gear pumping principle  uses two rotating gears which unmesh at the suction side of the pump to create voids which allow atmospheric pressure to force 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.

Rogers Machinery Company, Inc. - Viking External Gear Pump