# NAPCO Pump Company > NAPCO (North American Pump Company, L.L.C.) is a manufacturer of rotary gear pumps, service kits, and factory-matched repair kits for industrial fluid transfer. Founded in 1995 and headquartered in Sandy, Utah, NAPCO serves industries worldwide including mining and explosives, chemical processing, petroleum and fuel transfer, adhesives and sealants, food and beverage, and general industrial applications. NAPCO sells direct to end users and OEMs — contact NAPCO for pricing and lead times. ## Company Details - **Founded**: 1995 - **Headquarters**: 8744 Sandy Parkway, Unit E, Sandy, UT 84070 - **Phone**: (801) 382-8881 - **Email**: taylor@napcopumps.com - **Website**: [https://www.napcopumps.com](https://www.napcopumps.com) - **Sales Model**: Direct sales (email-first workflow, payment-in-advance, customer-arranged freight, 6-8 week lead times) ## Products ### Rotary Gear Pumps NAPCO manufactures external rotary gear pumps in 2-inch and 3-inch port sizes, available in ductile iron or stainless steel. All pumps are self-priming, bi-directional, and fully field-serviceable without returning the pump to the factory. - [PA300S — 3" Stainless Steel Rotary Gear Pump](https://www.napcopumps.com/products/pa300s): 3-inch stainless steel pump, up to 158 GPM at 280 RPM. For chemical processing, food-grade, and corrosive fluid applications. - [PA300C — 3" Ductile Iron Rotary Gear Pump](https://www.napcopumps.com/products/pa300c): 3-inch ductile iron pump, up to 158 GPM at 280 RPM. For mining support fluids, petroleum, adhesives, and heavy industrial applications (use stainless PA300S for ammonium nitrate emulsions). - [PA200S — 2" Stainless Steel Rotary Gear Pump](https://www.napcopumps.com/products/pa200s): 2-inch stainless steel pump, up to 69 GPM at 190 RPM. For chemical, food-grade, and corrosion-resistant applications. - [PA200C — 2" Ductile Iron Rotary Gear Pump](https://www.napcopumps.com/products/pa200c): 2-inch ductile iron pump, up to 69 GPM at 190 RPM. For general industrial, petroleum, and abrasive fluid transfer. - [All Products](https://www.napcopumps.com/products): Full product catalog including pumps and repair kits. ### Repair Kits Factory-matched repair kits for every pump model. Each kit contains: 1 drive gear assembly and 1 idler gear assembly (gears mounted on induction-hardened stainless steel shafts in S kits, ductile iron shafts in C kits), 4 roller bearings, 4 high-pressure seals, 4 low-pressure seals, and 5 center case gaskets (2 at .016 inch, 3 at .008 inch) — everything needed for a complete field rebuild. - [PK300S — 3" Stainless Steel Repair Kit](https://www.napcopumps.com/products/pk300s): Repair kit for PA300S pump. - [PK300C — 3" Ductile Iron Repair Kit](https://www.napcopumps.com/products/pk300c): Repair kit for PA300C pump. - [PK200S — 2" Stainless Steel Repair Kit](https://www.napcopumps.com/products/pk200s): Repair kit for PA200S pump. - [PK200C — 2" Ductile Iron Repair Kit](https://www.napcopumps.com/products/pk200c): Repair kit for PA200C pump. - [Gear Pump Service Kit Finder](https://www.napcopumps.com/kit): Find the right gear pump service kit and repair kit by pump model. ## Key Specifications - **Pump sizes**: 2-inch (PA200 series) and 3-inch (PA300 series) - **Housing materials**: Ductile iron (C suffix) or stainless steel (S suffix) - **Gear materials**: Nitrile rubber (standard, rated to 240F), EPDM, urethane, or Viton available - **Seals**: Viton standard - **Bearings**: Roller type - **Max flow rate (2")**: 69 GPM at 190 RPM / 10 PSI - **Max flow rate (3")**: 158 GPM at 280 RPM / 10 PSI - **Max operating pressure**: 100 PSI tested - **HP at 100 PSI (2")**: ~5.7 brake HP - **HP at 100 PSI (3")**: ~13.4 brake HP - **Self-priming**: Yes - **Bi-directional**: Yes (reverse drive rotation to reverse flow) - **Field-serviceable**: Yes (complete rebuild in the field using repair kits) ## Industries Served - [Explosives & Mining](https://www.napcopumps.com/industries/explosives-mining): Plant emulsion, ANFO slurry, and bulk matrix transfer. Stainless PA300S/PA200S. Surface/plant duty — not borehole injection. - [Adhesives & Sealants](https://www.napcopumps.com/industries/adhesives-sealants): High-viscosity adhesives, sealants, hot melt, and resin transfer. - [Chemical Processing](https://www.napcopumps.com/industries/chemical-processing): Chemical transfer, acids, solvents, and caustics. Stainless steel construction with Viton seals. - [Petroleum & Fuel Transfer](https://www.napcopumps.com/industries/petroleum-fuel): Diesel, gasoline, fuel oil, waste oil, and lubricant transfer. - [Food & Beverage](https://www.napcopumps.com/industries/food-beverage): Syrups, oils, flavorings, chocolate, and other food-grade fluids. Stainless steel pumps. - [General Industrial](https://www.napcopumps.com/industries/general-industrial): Industrial gear pumps for plant transfer of paints, oils, resins, and abrasive fluids. ## Technical Resources - [Engineering & Performance Data](https://www.napcopumps.com/engineering): Tested flow rates, horsepower curves, dimensional data, and material specifications for all pump models. - [How to Size a Rotary Gear Pump](https://www.napcopumps.com/resources/how-to-size-rotary-gear-pump): Step-by-step pump sizing guide covering flow rate, viscosity, pressure, and material selection. - [Pump Sizing Calculator](https://www.napcopumps.com/tools/pump-sizing-calculator): Interactive tool for calculating pump requirements based on flow rate, viscosity, and system pressure. - [Gear Pumps vs. Progressive Cavity Pumps](https://www.napcopumps.com/resources/gear-pumps-vs-progressive-cavity-pumps): Comparison of two common positive displacement pump technologies. - [Gear Pumps vs. Centrifugal Pumps](https://www.napcopumps.com/blog/gear-pump-vs-centrifugal-pump): When to choose a rotary gear pump over a centrifugal pump. - [Nitrile vs. Viton Gears](https://www.napcopumps.com/resources/nitrile-vs-viton-gears): Gear material selection guide for different fluids and temperatures. - [Stainless Steel vs. Ductile Iron Pumps](https://www.napcopumps.com/resources/stainless-steel-vs-ductile-iron-pumps): Housing material comparison for different application requirements. - [Ductile Iron Gear Pumps for Industrial Fluid Transfer](https://www.napcopumps.com/resources/ductile-iron-gear-pumps): Metallurgy, best-fit fluids, PA200C vs. PA300C selection, and how transfer pumps differ from hydraulic gear pumps. - [Gear Pump Cavitation Troubleshooting & Prevention](https://www.napcopumps.com/resources/gear-pump-cavitation-guide): Causes, symptoms, prevention, suction line sizing, and field rebuild after cavitation damage (updated 2026-09-14). - [Rotary Gear Pump vs. Centrifugal Pump](https://www.napcopumps.com/resources/rotary-gear-pump-vs-centrifugal-pump): When to use each technology, and why gear pumps excel for viscous fluids. - [Rotary Gear Pump](https://www.napcopumps.com/resources/rotary-gear-pump-working-principle): NAPCO rotary gear pumps. External gear, 2" and 3". How they move fluid, where they fit, and which pump to order. - [Positive Displacement Pumps: Gear, Vane, Piston](https://www.napcopumps.com/resources/positive-displacement-pump-comparison): Strengths, weaknesses, and when to choose each type. - [PA200S 2" Stainless Steel Gear Pump](https://www.napcopumps.com/resources/pa200s-stainless-steel-gear-pump): Spec guide for the PA200S: flow, pressure, gear options, applications, and FAQ. ## Maintenance & Support - [Rotary Gear Pump Maintenance Schedule](https://www.napcopumps.com/resources/rotary-gear-pump-maintenance-schedule): Recommended maintenance intervals and procedures. - [Field Maintenance Guide](https://www.napcopumps.com/resources/field-maintenance-rotary-gear-pumps): Step-by-step field maintenance and rebuild procedures. - [Gear Pump Troubleshooting Guide](https://www.napcopumps.com/resources/gear-pump-troubleshooting-guide): Diagnose no-flow, low pressure, noise, seal leaks, overheating, and vibration. - [How to Rebuild a Rotary Gear Pump](https://www.napcopumps.com/resources/gear-pump-rebuild-guide): Field rebuild for PA200 and PA300: kit contents, 12-step procedure, clearance, and torque. - [Pump Repair Kit vs. Replacement](https://www.napcopumps.com/resources/pump-repair-kit-vs-replacement): When to rebuild with a kit versus buying a new pump. - [Signs Your Gear Pump Needs a Rebuild](https://www.napcopumps.com/blog/signs-gear-pump-needs-rebuild): How to identify wear and know when to rebuild. - [Total Cost of Ownership: Rebuild vs. Replace](https://www.napcopumps.com/blog/total-cost-of-ownership-rebuild-vs-replace): Economic analysis of rebuilding vs. replacing industrial gear pumps. - [Field Rebuild Advantage Case Study](https://www.napcopumps.com/case-studies/field-rebuild-advantage): Real-world cost and downtime savings from field rebuilds. - [Bulk Emulsion Plant Rebuild Case Study](https://www.napcopumps.com/case-studies/bulk-emulsion-plant-rebuild): On-site PA300S rebuilds vs replacement lead time at a bulk emulsion plant. - [Pump Identification Guide](https://www.napcopumps.com/pump-identification): How to identify your NAPCO pump model from the nameplate. - [Installation Guide](https://www.napcopumps.com/installation): Proper installation procedures for NAPCO rotary gear pumps. - [Repairs](https://www.napcopumps.com/repairs): Repair service information and support. - [Warranty](https://www.napcopumps.com/warranty): NAPCO pump warranty terms and conditions. ## Industry-Specific Guides - [Pump Selection for Emulsion Explosives](https://www.napcopumps.com/resources/pump-selection-emulsion-explosives): Pump selection guide for emulsion and ANFO applications. - [Pumping Ammonium Nitrate Emulsion & ANFO](https://www.napcopumps.com/resources/ammonium-nitrate-anfo-pumping): Which ammonium nitrate products can be pumped (emulsion matrix, AN solution) vs. augered (straight ANFO), why stainless steel is required, and PA300S/PA200S selection. - [Bulk Emulsion Products](https://www.napcopumps.com/resources/bulk-emulsion-products): Types, delivery, and which bulk emulsion grades are pumpable. - [Gear Pumps for Bulk Emulsion Trucks & MMUs](https://www.napcopumps.com/resources/gear-pumps-bulk-emulsion-trucks): Stainless gear pump selection for truck loading and surface transfer. - [Cartridge Emulsion Explosives](https://www.napcopumps.com/resources/cartridge-emulsion-explosives): Packaged product is hand-loaded. Stainless gear pumps move bulk matrix, not cartridges. - [ANFO vs Emulsion](https://www.napcopumps.com/resources/anfo-vs-emulsion): ANFO is dry prill plus fuel oil. Emulsion is a pumpable matrix. Stainless PA300S / PA200S move bulk matrix, not straight ANFO. - [How to Order NAPCO Gear Pumps & Kits](https://www.napcopumps.com/resources/how-to-order-napco-gear-pumps): Lead times, payment, freight, and quote checklist. - [Adhesive Pump](https://www.napcopumps.com/resources/adhesive-pump): Plant transfer of adhesives and sealants. Drum, tote, tank, load-out. PA300C / PA200C. - [High-Viscosity Adhesive Pump Guide](https://www.napcopumps.com/resources/high-viscosity-adhesive-pump-guide): Pumping high-viscosity adhesives, sealants, and resins. - [Gear Pumps for Chemical Transfer](https://www.napcopumps.com/resources/gear-pumps-for-chemical-transfer): Chemical compatibility and pump selection for chemical processing. - [Chemical Resistant Gear Pump](https://www.napcopumps.com/resources/chemical-resistant-gear-pump): Stainless PA300S/PA200S for solvents, dilute acids, and fluids that attack iron. Nitrile or Viton gears. - [Gear Pumps for Fuel & Petroleum](https://www.napcopumps.com/resources/gear-pumps-for-fuel-petroleum): Fuel, diesel, and petroleum transfer applications. - [Gear Pump for Paint Transfer](https://www.napcopumps.com/resources/gear-pump-for-paint-transfer): Plant transfer of latex, enamel, polyurethane, industrial coatings, and inks. Housing, gears, PA300C/PA200C. - [Food Grade Gear Pump](https://www.napcopumps.com/resources/food-grade-gear-pump): Stainless PA200S and PA300S for plant transfer of food and beverage fluids. - [Stainless Steel Gear Pumps for Food Processing](https://www.napcopumps.com/resources/stainless-steel-gear-pumps-food-processing): Material compatibility, cleanability, viscosity, and FDA compliance. - [Rotary Gear Pumps in Explosives & Mining](https://www.napcopumps.com/resources/rotary-pumps-explosives-mining): Emulsion explosives transfer, viscosity control, and field serviceability. - [High-Viscosity Pump Selection for Adhesives](https://www.napcopumps.com/resources/high-viscosity-pump-selection-adhesives): Pump selection for high-viscosity adhesives, sealants, and resins. ## Contact & Inquiries - [Contact / Request a Quote](https://www.napcopumps.com/contact): Email-based quoting. Provide application details (fluid type, viscosity, flow rate, pressure, temperature) for pump recommendations. - [FAQ](https://www.napcopumps.com/faq): Frequently asked questions about NAPCO products, ordering, and technical support. - [About NAPCO](https://www.napcopumps.com/about): Company background, history, and capabilities. ## Optional - [Blog](https://www.napcopumps.com/blog): Technical articles on rotary gear pumps. - [Rotary Gear Pump 101](https://www.napcopumps.com/blog/rotary-gear-pump-101): Beginner's guide to rotary gear pumps. - [Resources Hub](https://www.napcopumps.com/resources): All technical articles and guides. - [Terms of Use](https://www.napcopumps.com/terms-of-use): Website terms of use. - [Privacy Policy](https://www.napcopumps.com/privacy-policy): Privacy policy. - [Legal](https://www.napcopumps.com/legal): Legal information.