The Grundfos NB50-200 Series is a high-performance, close-coupled end-suction centrifugal pump range designed for heavy-duty applications that require high flow capacity combined with dependable medium-to-high head pressure. These non-self-priming, single-stage pumps feature an axial suction port and radial discharge port with a horizontal shaft layout, ensuring efficient, unrestricted liquid flow for a wide variety of industrial and commercial installations.

Equipped with a hydraulically and dynamically balanced impeller, the NB50-200 delivers smooth, stable operation with minimal vibration and wear, even at higher pressures. Its robust cast iron pump housing combined with durable, corrosion-resistant internal wear parts guarantees long-lasting, reliable service when handling thin, clean or slightly contaminated liquids without abrasive or fibrous solids.

Each pump in the NB50-200 Series is directly coupled to a powerful IEC-flanged three-phase AC motor operating at 2900 RPM, providing flow rates up to 1800 LPM and heads up to 70 metres (700 kPa). An O-ring seal between the pump housing and cover ensures leak-free performance and secure system operation under continuous duty.

Compact and easy to install and maintain, the NB50-200 Series is the ideal solution for high-volume water supply, industrial process boosting, cooling systems, HVAC circulation, and large-scale irrigation where consistent high flow and pressure performance are critical.

FEATURES

• Non-self-priming, single-stage, close-coupled centrifugal pump
• Axial suction and radial discharge design for optimised, unrestricted flow
• Hydraulically and dynamically balanced impeller for stable high-pressure operation
• Heavy-duty cast iron pump housing with corrosion-resistant internal components
• O-ring seal for secure, leak-free operation under demanding conditions
• Direct coupled IEC flanged three-phase AC motor (2900 RPM)
• DN80 inlet / DN50 outlet with PN16 flanged connections
• Delivers flow up to 1800 LPM and heads up to 70 metres (700 kPa)
• Ideal for high-capacity water supply, industrial boosting, process circulation, HVAC, cooling water and irrigation