Bronze Rotary Gear Pump - N970

Designed for High-Pressure and Varying Temperatures
Built to withstand high-pressure environments, the N970 features sturdy mechanical seals that maintain a secure, leak-free operation. It is a temperature-resistant pump, capable of transferring fluids across a recommended liquid temperature range without compromising performance.

These pumps are suitable for all liquids that are compatible with bronze. Most common liquids are water, oil, and mild chemicals in the pH range of 4 to 11. Viscous liquids require reduced shaft speeds of 1150 RPM or lower – please consult the factory for detailed guidance.

Liquids containing solids, abrasives, powders, or paint pigments are definitely not recommended for gear pumps. If abrasives are unavoidable, use a very low shaft speed.

The recommended liquid temperature range is 32°F to 140°F (0°C to 60°C) for the longest pump life. If more extreme temperature conditions exist, our factory should be consulted. Freezing of water-filled pumps can cause damage and must be avoided.

Oils at low temperatures become very viscous, requiring either reduced speed or additional power to maintain flow.

Industrial Strength for Demanding Tasks
As an industrial gear pump, the N970 is ready to tackle the toughest industrial tasks. Its construction is designed for heavy-duty use, with the added benefit of high suction lift capabilities. This makes it an excellent alternative to centrifugal pumps, especially in applications where self-priming is essential.

Safety and Adaptability
The pump includes a gear pump relief valve, providing a crucial safety feature to act as a discharge pressure relief when necessary. The standard clockwise rotation pump design meets industry norms, and the unit allows for easy adjustments to suit specific system requirements.

Overheating can occur within 5–10 minutes if the discharge line is completely shut off for extended periods. Unless otherwise specified, the pump motor unit is supplied by the factory for shaft rotation clockwise from shaft end.

Reversing the motor rotation will reverse the “in” and “out” ports and also requires relocating the relief valve. The relief valve is always located on the discharge side in this pump series.

The factory pressure setting is 50 PSIG (3.4 bar)). To increase pressure, turn the relief valve adjusting screw clockwise.

• To reverse
• Three-phase motors

For pressures over (100 PSI) (6.9 bar), the above selections are suitable for pumping fluids with lubricity (e.g., oils, polymers). Service life will decrease for fluids without lubricity (e.g., water, solvents).