Rotary Gear Pumps
NAPCO rotary gear pumps are precision-engineered for demanding industrial transfer applications. Available in 2″ and 3″ port sizes, with stainless steel or ductile iron housings — choose a ductile iron gear pump for non-corrosive fuel, oil, and adhesive service. Self-priming, bi-directional, and fully serviceable.
PA200C – 2″ Ductile Iron Pump
- Ductile iron housing for rugged durability
- Up to 69 GPM @ 190 RPM
- Self-priming; bi-directional rotation
- Ideal for mining & general industrial transfer
PA200S – 2″ Stainless Steel Pump
- Stainless steel for corrosion resistance
- Up to 69 GPM @ 190 RPM
- Chemical & emulsion compatible
- Ideal for food-grade & sensitive fluids
PA300C – 3″ Ductile Iron Pump
- Ductile iron for heavy-duty service
- Up to 138 GPM @ 190 RPM
- Self-priming; fully serviceable
- Ideal for high-volume industrial transfer
PA300S – 3″ Stainless Steel Pump
- Stainless steel for aggressive chemicals
- Up to 138 GPM @ 190 RPM
- Corrosion-resistant; fully serviceable
- Ideal for emulsions & corrosive fluids
Service Kits
Factory-matched gear pump service kits for all NAPCO rotary gear pumps. Each service kit includes precision-fit components to restore your pump to original specifications.
PK200C
2″ Ductile Iron Repair Kit
View Details →PK200S
2″ Stainless Steel Repair Kit
View Details →
PK300C
3″ Ductile Iron Repair Kit
View Details →PK300S
3″ Stainless Steel Repair Kit
View Details →Helpful Resources
Engineering & Performance Data
Flow rates, pressure ratings, materials, and dimensional specifications.
How to Size a Rotary Gear Pump
Calculate the right pump for your flow rate, pressure, and viscosity.
Stainless Steel vs. Ductile Iron
Material selection guide for different fluid environments.
How Rotary Gear Pumps Work
Technical overview of internal design and operating principles.
Repair Kit vs. Replacement
Cost analysis and guidance for rebuilding versus replacing pumps.
Gear vs. Vane vs. Piston Pumps
Comparison of positive displacement pump types for industrial applications.
Need Help Selecting the Right Pump?
Tell us about your application, fluid type, and operating conditions — we'll recommend the right pump configuration.
Contact NAPCO