Industry: General Industrial
Industrial Gear Pump
Heavy-duty rotary gear pumps for plant transfer. Same platform for paints, coatings, resins, lubricants, waste oil, and other demanding industrial fluids.
An industrial gear pump is a positive displacement rotary pump for viscous, abrasive, and corrosive plant fluids. NAPCO builds them in ductile iron and stainless steel, with 2-inch and 3-inch ports, for paints, coatings, resins, lubricants, waste oil, and general transfer. Self-priming and bi-directional. Rebuild in the field with genuine kits. Configured in Sandy, Utah.
What an industrial gear pump does in the plant
Plant transfer rarely fits one neat industry label. An industrial gear pump keeps flow steady as viscosity changes, handles abrasive or dirty fluid, and reverses for load and unload without re-plumbing. NAPCO uses one rotary gear pump platform across housing materials and port sizes so maintenance stays the same from line to line.
Ductile iron or stainless steel
NAPCO offers every pump model in both ductile iron and stainless steel. Selecting the right housing material depends on the fluid being pumped and the operating environment.
Ductile Iron (PA200C / PA300C)
The cost-effective choice for non-corrosive applications. A NAPCO ductile iron gear pump excels with paints, coatings, inks, lubricants, petroleum products, and waste oil. Superior mechanical strength and abrasion resistance.
Best for: Paints, coatings, inks, petroleum, lubricants, waste oil
Stainless Steel (PA200S / PA300S)
Required for corrosive fluids, acidic solutions, and applications where the pump housing must resist chemical attack. Also preferred for food-grade and pharmaceutical-adjacent applications.
Best for: Chemicals, solvents, corrosive fluids, food-grade materials
Complete pump lineup
Every NAPCO pump shares the same proven rotary gear design. The difference is port size and housing material. Select the right combination for your flow rate and fluid compatibility. See all products.
PA300C, 3″ Ductile Iron
High-volume workhorse for paints, coatings, inks, petroleum products, and other non-corrosive industrial fluids.
| Max Flow | 158 GPM @ 280 RPM |
| Max Pressure | 100 PSI |
| Housing | Ductile Iron |
| Weight | 173 lbs |
PA300S, 3″ Stainless Steel
High-volume stainless pump for corrosive chemicals, solvents, and applications requiring chemical resistance.
| Max Flow | 158 GPM @ 280 RPM |
| Max Pressure | 100 PSI |
| Housing | Stainless Steel |
| Weight | 173 lbs |
PA200C, 2″ Ductile Iron
Compact option for smaller-volume lines, batch operations, and applications where space is limited.
| Max Flow | 69 GPM @ 190 RPM |
| Max Pressure | 100 PSI |
| Housing | Ductile Iron |
| Weight | 114 lbs |
PA200S, 2″ Stainless Steel
Compact stainless pump for corrosive or chemically aggressive fluids in tight spaces.
| Max Flow | 69 GPM @ 190 RPM |
| Max Pressure | 100 PSI |
| Housing | Stainless Steel |
| Weight | 114 lbs |
General industrial applications
- •Paints & coatings: Transfer of latex, enamel, polyurethane, and industrial coatings in manufacturing and packaging operations. See gear pump for paint transfer.
- •Inks & dyes: Printing ink transfer, textile dye handling, and colorant dispensing in production environments.
- •Lubricants & oils: Transfer of hydraulic oil, gear oil, cutting fluid, and industrial lubricants between storage and equipment. Also see petroleum transfer.
- •Waste oil & recycling: Collection and transfer of used motor oil, industrial waste fluids, and recycled petroleum products.
- •Resins & polymers: Metering and transfer of polyester resins, urethanes, silicones, and casting compounds in production facilities. Related: adhesives and sealants.
- •Asphalt & bitumen: Hot asphalt transfer, emulsion handling, and bitumen pumping for road construction and roofing applications.
Corrosive solvents and chemically aggressive fluids sit on the chemical processing page. Rebuild parts are on the gear pump service kit page.
Industrial gear pump FAQs
What is an industrial gear pump?
An industrial gear pump is a positive displacement rotary pump that moves viscous, abrasive, or corrosive fluids at a predictable flow rate. NAPCO industrial gear pumps come in 2-inch and 3-inch ports with ductile iron or stainless steel housings for paints, coatings, inks, lubricants, resins, waste oil, and general plant transfer.
What fluids can a NAPCO industrial gear pump move?
The same rotary gear platform handles thin solvents through heavy pastes, and clean lubricants through abrasive slurries. Typical plant fluids include paints, coatings, inks, resins, polymers, hydraulic and gear oils, waste oil, and asphalt emulsions.
When should I choose ductile iron vs stainless steel?
Ductile iron (PA200C / PA300C) fits most non-corrosive work: paints, coatings, inks, lubricants, petroleum, and waste oil. Stainless steel (PA200S / PA300S) fits corrosive solvents, chemically aggressive fluids, and cases where the housing must resist chemical attack.
What flow rates do the 2-inch and 3-inch models deliver?
PA300C and PA300S: 158 GPM at 280 RPM, 100 PSI max. PA200C and PA200S: 69 GPM at 190 RPM, 100 PSI max. Pick port size for line volume; pick housing for the fluid.
Are NAPCO industrial gear pumps field serviceable?
Yes. Rebuild in the field with genuine NAPCO repair kits. No special tools and no factory return for a standard rebuild.
Not sure which pump fits your application?
Tell us about your fluid: viscosity, temperature, solids content, and flow requirements, and we’ll recommend the right NAPCO pump configuration.