The Grundfos NB40-160 Series is a robust and efficient close-coupled end-suction centrifugal pump range, designed to handle higher heads at medium to high flow rates for demanding clean water and light industrial liquid transfer tasks. These non-self-priming, single-stage pumps feature an axial suction port and radial discharge port with a horizontal shaft, providing smooth, unrestricted liquid flow and consistent high-pressure delivery.

Each pump is built with a dynamically and hydraulically balanced impeller for stable, vibration-free operation and optimised efficiency, even at higher system pressures. The sturdy cast iron pump housing combined with corrosion-resistant internal wear parts ensures long-lasting reliability when handling thin, clean or slightly contaminated liquids without abrasive or fibrous solids.

The NB40-160 Series is directly coupled to an IEC-flanged three-phase AC motor running at 2900 RPM, delivering dependable flow rates up to 1000 LPM and heads up to 45 metres (450 kPa). An O-ring seal between the pump housing and cover provides leak-free operation and secure system performance under continuous duty.

Easy to install and maintain thanks to its compact close-coupled design, the NB40-160 is the ideal solution for applications such as water supply, industrial pressure boosting, process water circulation, cooling systems, HVAC, and large-scale irrigation where reliable high head performance is essential.

FEATURES

• Non-self-priming, single-stage, close-coupled centrifugal pump
• Axial suction and radial discharge for optimised, unrestricted flow
• Dynamically and hydraulically balanced impeller for smooth, stable operation
• Rugged cast iron housing with corrosion-resistant wear components
• O-ring seal for safe, leak-free performance under high pressures
• Direct coupled IEC flanged three-phase AC motor (2900 RPM)
• DN65 inlet / DN40 outlet with PN16 flanged connections
• Delivers up to 1000 LPM and heads up to 45 metres (450 kPa)
• Ideal for high-capacity water supply, industrial boosting, HVAC, process circulation, and irrigation