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.

With Viking pumps the answer is usually “yes,” but before you turn that “reverse” switch on your pump’s motor starter or variable frequency drive, there are a number of things to consider, which are discussed here

Explore how internal gear pumps work, their unique “gear within a gear” design, and key advantages like efficiency and versatility. Ideal for professionals in fluid handling industries.

Like any job, you need the proper tools to do it well – and the same is true for repairing or servicing positive displacement gear pumps. Below are helpful hand tools that Viking's pump experts recommend having ready for… read more.

Having a great product, with a great reputation, and being a technology inventor like Viking Pump®, positions you as a market leader with high visibility. As such, other internal gear pump manufacturers naturally want to follow in your footsteps. While that is a huge compliment, it also causes confusion among internal gear pump buyers.

In this article we'll walk through 5 reasons you'll want to stick with genuine Viking Pump parts and products, saving you time, money, and a headache. 

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.

Unlike most of my colleagues I didn’t start out with a mechanical background.  While they were studying kinetics and machine design, I was studying digital electronics and industrial power.  When I started my career in the world of pumps, I had to learn a whole new set of concepts.  What was surprising was that while the terminology may be a bit different, the concepts are very similar.  Think of the following as a “Rosetta Stone” for translating the common terms and concepts of fluid systems to your more familiar terms and concepts of electrical systems.

Long before Covid-19 many of us, myself included, have been sidelined by illness.  During this period of downtime, we rest and minimize physical activity.  Post-illness we’re eager to resume our normal lifestyle, but doing so without preparation can lead to difficulties, even injury.  For idled pumping equipment the same principle applies.

In the world of positive displacement pumping, reduced speed operation is a common requirement.  High viscosity liquids, shear sensitive liquids, abrasive liquids, or any combination thereof require the pump speed to be reduced from synchronous motor speeds.