Bronze Rotary Gear Pump - N999

Standout Features:

• Tough, corrosion-resistant bronze build for longevity
• Space-saving close-coupled design for simple installation
• Sturdy stainless steel shafts for enduring performance
• High-quality bronze spur gears for reliable operation
• Self-lubricating carbon graphite bearings that reduce maintenance
• O-ring cover seal offering unparalleled leak protection
• Standard Nitrile Lip Seal, with a fluoroelastomer option for demanding environments
• Adaptable for easy field assembly to fit a range of motor frames

Expanded Pump Range:

• For AC motor compact pump units, refer to our Close Coupled Bronze Adapterless Rotary Gear Pumps
• For configurations requiring a mechanical seal, see our carbonator style – model N95060

Drive Mechanism
Our close-coupled pumps are designed for direct attachment to electric motors using an appropriate adapter bracket. A flexible coupling ensures a secure and efficient connection between the pump drive shaft and the motor shaft.

Liquid and Temperature Compatibility
The N999 is compatible with any liquid that bronze can handle, most commonly water, oil, and mild chemicals within a pH range of 4 to 11. For viscous liquids, operate at reduced shaft speeds of 1150 RPM or less. For guidance on these applications, please consult our factory. To ensure the longevity of your pump, avoid using it with liquids that contain solids, abrasives, powders, or paint pigments. The recommended temperature range for optimal pump life is from 32°F to 140°F (0°C to 60°C). For advice on more extreme conditions or to prevent potential freezing damage, reach out to our factory. Remember that cold oils can be especially viscous and may require a lower operating speed or additional power.

Suction Lift and Installation
To achieve the best results, place the pump as close as possible to the liquid source to minimize suction lift. Brand new, the N999 can lift water up to 20 feet (6.1 meters) through the suction line. We recommend using a foot valve with a strainer at the start of the suction line to help keep the pump primed and prevent dry running. The suction pipe should match the pump's inlet port size, but for longer or more viscous fluid lines, choose a larger pipe to ensure efficient flow.

Shaft Seals
The standard configuration includes a Nitrile lip seal, with the option to upgrade to a fluoroelastomer seal for more challenging conditions. To opt for the fluoroelastomer seal, simply add 'S5' to the pump model number when ordering.

Optional Relief Valve
In systems with throttling devices like valves or nozzles, a relief valve is crucial to protect against overpressure by redirecting liquid back to the suction side or tank. Our R-model pumps include an integrated relief valve for intermittent use to prevent overheating; however, it is not intended for continuous pressure or flow control. For such applications, install a separate relief valve in the pressure line. The factory default for the pump motor unit is for a counterclockwise shaft rotation from the pump shaft end. If the motor rotation is reversed, it's important to also adjust the "in" and "out" ports and relocate the relief valve, which is positioned on the inlet side for this series. The factory pressure setting starts at 50 PSIG (3.4 bar), but you can increase the pressure by turning the relief valve's adjusting screw clockwise.

Why Choose the Bronze Gear Pump N999? 

• Precision: With its positive displacement design, the N999 provides precise control over your flow rates, ensuring accurate and reliable fluid transfer.

• Durability: Made with high-quality materials like bronze and stainless steel, this pump is built to resist corrosion and wear, offering a long-lasting solution.

• Versatility: The compact design and compatibility with various motor frames make this pump adaptable for a range of applications.

• Ease of Use: Simple field assembly and the option for easy customization with different seals or relief valves ensure that your pump can be tailored to meet your specific needs.

• Peace of Mind: Equipped with superior leak protection and designed for easy maintenance, the N999 gives you confidence in your fluid processing systems. 

Installation TipsWhen setting up your Bronze Gear Pump N999, always aim to reduce the suction lift by placing the pump near the liquid source. This reduces the energy required to draw the liquid into the pump and can help prevent potential issues associated with priming.

For systems that require backpressure control, the optional relief valve is a vital component, safeguarding against pressure build-up that could potentially damage the pump or your system. Remember that the built-in relief valve is a safety feature and not intended for regulating flow or pressure in continuous service. For constant flow control, a separate, external relief valve should be installed.

Customer SupportOur team is ready to assist you with any inquiries you have about the Bronze Gear Pump N999. Whether you need help with technical specifications, installation guidance, or selecting the right pump for your application, we're here to ensure you get the most out of your investment. Contact us today for personalized support and discover how the N999 can enhance your operations.

Repair Kits contain items 3, 4, 5, 7, 12, 14, 15 & 24.

Adapter Kits

M - 48 Frame | OB10562

N - 56 Frame | OB10816

P - S56 Frame | OB11722

Q - 56C Frame (to 3/4 HP) | OB11331

C - 56C Frame (above 3/4 HP) | OB11331H

F - IEC71 | OB11332

N/A - Adapterless - Modified 48 | N/A