Positive Displacement Rotary Gear Pumps
Rotary Gear Pumps Built to Last
Precision-engineered rotary gear pumps for demanding industrial transfer applications.
- Self-Priming
- Bi-Directional
- Field Serviceable
- Made in USA
Precision-Engineered Rotary Gear Pumps
For over 30 years, NAPCO has been a trusted manufacturer of high-performance rotary gear pumps, designed for demanding industrial applications. Our pumps are built for reliability, durability, and efficiency — ensuring seamless operation in abrasive, viscous, and corrosive fluid transfer processes.
From our headquarters in Sandy, Utah, we deliver robust pumping solutions and long service life to industries worldwide. Every pump is precision-machined, assembled, and tested to meet the exacting standards of modern industrial use. Learn about how gear pumps work and explore gear pumps compared to centrifugal alternatives.
Explore our rotary gear pumps and repair kits, or browse technical resources including sizing guides, material selection articles, and application guides.
Why Choose NAPCO
Built to Last
Heavy-duty ductile or stainless housings engineered for reliability in the harshest conditions.
Fully Serviceable
All pumps can be rebuilt with genuine NAPCO repair kits for long-term performance and uptime.
Precision Machined
CNC-machined components maintain tight tolerances for consistent flow and pressure.
Made in the USA
Proudly engineered and assembled in Sandy, Utah for global industrial use.
Our Pumps
Available in 2″ and 3″ port sizes, with stainless steel or ductile iron housings and nitrile or Viton gears.
PA300S
3″ Stainless Steel Rotary Gear Pump
PA300C
3″ Ductile Iron Rotary Gear Pump
PA200S
2″ Stainless Steel Rotary Gear Pump
PA200C
2″ Ductile Iron Rotary Gear Pump
Rebuild, Don't Replace
Keep Your Pump Running — Rebuild It On-Site
NAPCO repair kits are factory-matched to every pump model. Each kit includes gear assemblies, bearings, mechanical seals, and gaskets — everything needed for a complete field rebuild without returning the pump to the factory. Rebuilding costs 30–50% less than a new pump and restores original factory specifications.
- Complete kit: gear assemblies, bearings, mechanical seals, gaskets
- 2–5 hour rebuild with standard hand tools — no special tooling
- Available in ductile iron (C) or stainless steel (S) to match your pump
Industries & Applications
Adhesives & Sealants
Petroleum & Fuel Transfer
Chemical Processing
Mining & Explosive Slurries
Food & Beverage
General Industrial
Sizing Tool
Pump Sizing Calculator
Enter your flow rate, pressure, and fluid type to get instant pump recommendations.
Tell us what you're pumping.
Send us your fluid, flow rate and pressure and we'll come back with a model, materials and lead time.