Discover how internal gear pumps work, their key features, and their advantages across various industries. Learn why they're the preferred choice for fluid handling.

Viking Pump’s new generation of internal gear pumps offer a wide array of benefits that the previous alloy pumps could not, particularly in the area of porting flexibility. These new pumps reduced the number of casing configurations, which helps reduce manufacturing complexity, cost and lead times, while at the same time increasing the number of porting options and providing greater porting flexibility.

As a masterclass in engineering design and manufacturing flexibility, Viking Pump has re-designed its heavy-duty alloy pumps, both steel and stainless steel, in the most ingenious ways. These new models reduce price and lead time by significantly reducing the number of casings and brackets for manufacturing simplification, while simultaneously providing more options for porting and shaft sealing, all while adding many great new standard features.

A key advantage of rotary positive displacement pumps is providing consistent flow regardless of changes in liquid viscosity or differential pressure. But should a downstream blockage occur, pressure will rapidly build and may exceed the rating of the pump, drive equipment, system, or any combination thereof, with the potential for damage and unplanned downtime. For this reason, overpressure protection must be used, and pressure relief valves are the most commonly used form of overpressure protection for rotary positive displacement pumps.

All positive displacement pumps work by first expanding a cavity between the casing and one or more moving parts to create a partial vacuum, so atmospheric pressure can force liquid into the pumping chamber through the inlet port… read more.

Viking Pump invented the internal gear pump in the early 20th century; but did you know that we carry various other pump technologies? Most of them are easily identifiable based on their shape. But one common mistake… read more.

Flange standards used on Viking pumps have been in place for over a century so EVERYONE should be experts on this now…right? It turns out not so much. There are various standards and various design differences in each standard. AND the standards have evolved over the years, leading some to use obsolete terms which only compounds the confusion. The following should help clear up some of this confusion as well as give you a resource to help answer questions for others.