Grundfos

NK 250-500/485

Code: 98158457 EAN: 5711490649895
Type NK Bare shaft
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Technical specifications

Pump typeNK
Nominal flow (m³/h)912.9 m³/h
Nominal head (m)66.3 m
Minimum efficiency index (MEI)0.45
Frequency (Hz)50 Hz
Frequency converterNone
Max. liquid temp. (°C)120 °C
Min. liquid temp. (°C)0 °C
Max. operating pressure10 bar
Connection pressure ratingPN 10
Pump housing materialCast iron
Impeller materialCast iron
Shaft sealBAQE
Gross weight718 kg
Net weight641 kg
EAN code5711490649895

Performance curve

Performance curve NK 250-500/485

Hover over the curve to read flow and head at any point.

Documents and datasheets

Variants & alternative codes

Equivalent alternatives

Pumps in the same hydraulic class as 98158457 (equivalent flow and head), available in the catalogue.

Grundfos 98158457