Grundfos

NB 50-250/263

Code: 97839378 EAN: 5710625516484
Type NB
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Technical specifications

Pump typeNB
Nominal flow (m³/h)47.12 m³/h
Nominal head (m)19.67 m
Minimum efficiency index (MEI)0.70
Power P2 (kW)4 kW
Phases3
Phases3
Voltage (V)380-420D/660-725Y V
Frequency (Hz)50 Hz
Enclosure classIP55
Frequency converterNone
Max. liquid temp. (°C)120 °C
Min. liquid temp. (°C)0 °C
Max. ambient temp. (°C)55 °C
Max. operating pressure16 bar
Connection pressure ratingPN 16
Pump housing materialCast iron
Impeller materialCast iron
Shaft sealBAQE
Gross weight95 kg
Net weight78 kg
Motor number83V15213
EAN code5710625516484

Performance curve

Performance curve NB 50-250/263

Documents and datasheets

Variants & alternative codes

Equivalent alternatives

Pumps in the same hydraulic class as 97839378 (equivalent flow and head), available in the catalogue.

Grundfos 97839378