
Viking internal gear pumps stand out for their remarkable ability to move everything from thin solvents and fuel oils to thick, challenging materials like chocolate, asphalt, adhesives, and resins. Their useful viscosity range runs from 1 cP all the way to more than 1,000,000 cP, while properly configured models manage operating temperatures up to 800°F. This wide capability stems from a straightforward, yet highly effective, design that features only two moving parts and a single adjustable end clearance. That clearance lets you fine-tune the pump for high temperatures, peak efficiency with viscous fluids, or long-term wear compensation - without sacrificing performance. For a broader overview of how these pumps fit into positive displacement technology, see our complete internal gear pumps guide.
These pumps deliver smooth, non-pulsating flow. They are self-priming, can run dry for short intervals, and operate in either direction, making them equally suited for loading or unloading tanks and vessels. Because the design is so simple, maintenance stays straightforward and downtime stays low. If you’re facing a tough fluid-handling challenge in your plant, our team at Pye-Barker can help you select the exact Viking model that matches your flow, pressure, and viscosity needs - reach out today at (404) 363-6000 and let’s discuss your application.

At Pye-Barker Engineered Solutions, we explore the intricacies of these pumps to highlight their unparalleled capabilities. The internal gear pump working principle relies on the proven “gear-within-a-gear” concept. Liquid moves through four clear stages inside the pump:
This mechanism produces consistent volume control and eliminates pulsation, even under varying pressure conditions. To see how this gear-within-a-gear design differs from other rotary pumps, read our full external vs. internal gear pumps comparison.
If you want to understand how this differs from other rotary pumps, take a moment to review our detailed comparison of external versus internal gear pumps.
Viking internal gear pumps deliver several practical benefits that directly improve reliability and lower long-term costs in industrial settings:
With their flexible design and ability to manage a variety of liquids, Viking pumps simplify complex industrial processes. Many of these benefits are maximized with proper care - learn more in our internal gear pump maintenance tips article.
These features explain why so many Georgia manufacturers and processors trust Viking pumps for critical fluid transfer. If any of these advantages sound like a solution for your operation, give our engineers a call now at (404) 636-6000 - we’ll walk you through the right configuration.
You will find Viking internal gear pumps at work in a wide range of industries because they handle such a broad spectrum of fluids:
If you are still deciding between pump types for your specific fluid, our team recommends reviewing the general internal gear pump overview for additional selection criteria.
No matter which fluid you are moving, proper pump selection prevents downtime and protects product quality. Our team at Pye-Barker has decades of hands-on experience with these exact applications across Georgia. Contact us for a quick review of your current setup or to explore replacement options - we’re here to help you choose correctly the first time.
What Is the Internal Gear Pump Working Principle? An internal gear pump operates on the gear-within-a-gear design. Liquid enters between the outer rotor and inner idler gears, travels through locked cavities formed by the teeth, and is forced out at the discharge port by the meshing action and crescent seal. The four-stage process - entry, transfer, filling, and discharge - ensures smooth, pulseless flow.
What Viscosity Range Can Viking Internal Gear Pumps Handle? Viking internal gear pumps manage viscosities from 1 cP to more than 1,000,000 cP. This range makes them ideal for both thin solvents and extremely thick materials.
What Temperature Range Do These fPumps Support? With appropriate materials and jacketed options, Viking internal gear pumps handle liquids up to 800°F, thanks to the adjustable end clearance that compensates for thermal expansion.
How Do I Select the Right Viking Internal Gear Pump for My Application? Start with your fluid’s viscosity, temperature, required flow rate, and pressure. Our engineers review these details and recommend the best model, materials, and sealing options. Contact Pye-Barker today for expert guidance tailored to your process.
Why Choose Pye-Barker as Your Viking Pump Partner? As an authorized Viking Pump distributor, we combine factory-level product knowledge with local service, parts availability, and engineering support throughout Georgia. Whether you need a new pump, repairs, or system troubleshooting, we respond quickly and keep your operation running smoothly. We also maintain a full library of resources, including our know your pumps internal gear pumps page for deeper technical reading.
When your process demands reliable performance across thin and thick liquids alike, Viking internal gear pumps deliver the versatility, durability, and ease of maintenance you need. As your local authorized distributor, Pye-Barker Engineered Solutions stands ready to help you select the right model, install it correctly, and support it for years to come. You can explore even more Viking-specific options on our Viking gear pump overview, as well.
Reach out today - call now by dialing (404) 636-6000 or reach our team online for a personalized recommendation, quote, or on-site consultation. Let’s make sure your next pump installation improves efficiency and reduces headaches from day one.


