Grundfos NB
SubCategory: CentrifugalPumps
Manufacturer: Grundfos
Industry:
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Key Specifications
- Flows up to 1400 m³/h
- Pressure up to 16 bar
Product features
- End-suction centrifugal layout → Provides a familiar hydraulic format for general industrial and utility pumping.
- EN 733-based hydraulic dimensions → Supports standardized pump selection and replacement planning.
- Close-coupled construction → Reduces alignment requirements and installation footprint.
- Published NB/NK performance range to about 1,400 m³/h at 50 Hz → Covers large circulation and transfer duties.
- Predefined service kits → Groups routine wear parts for planned maintenance.
- Automatic opening above the set pressure → Helps protect the pump and downstream equipment from overpressure.
- Speed adaptation at part load → Can reduce unnecessary energy use compared with fixed-speed operation.
- Pressure, flow or temperature control capability → Supports stable process conditions when demand changes.
- Adjustable pressure setting → Allows the valve to be matched to dosing-system requirements.
- Maintains a defined minimum backpressure → Improves dosing stability where downstream resistance is low or variable.
Grundfos NB is a single-stage end-suction centrifugal pump used for water circulation, heating and cooling, industrial transfer, irrigation and general utility duties. It is relevant where reliable hydraulic or dosing performance, predictable operating conditions and maintainable equipment are important to process continuity. AxFlow supplies Grundfos equipment and can support selection for the required duty.
NB is a non-self-priming, close-coupled volute pump with axial suction, radial discharge and a horizontal shaft. The hydraulic layout follows the end-suction format used for general-purpose process and utility pumping. The construction should be selected against the actual liquid, system curve, installation and control requirements so that the technical advantages translate into stable operation.
Grundfos publishes NB/NK performance ranges according to EN 733 with flow rates extending to approximately 1,400 m³/h for the 50 Hz range, depending on size and configuration. These values describe the published series scope rather than a universal duty point, so the exact model, materials, pressure class and accessories must be verified for the application.
The close-coupled arrangement reduces alignment complexity and supports a compact installation, while standardized hydraulic dimensions can simplify replacement and service planning. This supports maintenance planning, reduces the risk of mismatched components and helps control downtime and lifecycle cost. Contact AxFlow for product selection, availability and a quote.
