Grundfos NB50-160 Series Close Coupled End Suction Pumps

The Grundfos NB50-160 Series is a powerful close-coupled end-suction centrifugal pump range designed for demanding applications that require high flow rates and reliable medium-to-high head performance. These non-self-priming, single-stage pumps feature an axial suction port and radial discharge port with a horizontal shaft configuration, delivering efficient, unimpeded liquid flow for a wide range of commercial and industrial uses.

Equipped with a hydraulically and dynamically balanced impeller, the NB50-160 ensures smooth, stable operation with minimal vibration and wear, even at higher pressures. The rugged cast iron pump housing, combined with durable corrosion-resistant internal wear parts, ensures dependable long-term service when handling thin, clean or slightly contaminated liquids free from abrasive or fibrous solids.

Each NB50-160 pump is directly coupled to a robust IEC-flanged three-phase AC motor running at 2900 RPM, providing flow rates up to 1750 LPM and heads up to 45 metres (450 kPa). A secure O-ring seal between the pump housing and cover guarantees leak-free operation and maximum system safety under constant duty.

The compact close-coupled design makes installation and servicing straightforward, making the NB50-160 Series an ideal solution for high-capacity water supply, industrial pressure boosting, HVAC circulation, cooling water transfer and irrigation systems that demand reliable, efficient performance.

FEATURES

• Non-self-priming, single-stage, close-coupled centrifugal pump
• Axial suction and radial discharge for efficient, unrestricted flow
• Hydraulically and dynamically balanced impeller for stable, low-vibration operation
• Heavy-duty cast iron pump housing with corrosion-resistant wear parts
• O-ring seal for secure, leak-free performance under continuous duty
• Direct coupled IEC flanged three-phase AC motor (2900 RPM)
• DN80 inlet / DN50 outlet with PN16 flanged connections
• Handles flow up to 1750 LPM and heads up to 45 metres (450 kPa)
• Ideal for high-volume water supply, industrial boosting, HVAC, cooling water and irrigation