Grundfos NB 40-250/230

Non-self priming, single-stage centrifugal
pump according to EN 1092-2. The pump is for the pumping of thin, clean or
slightly contaminated liquids without abrasive or long-fibred
solids. The pump is directly coupled with an
IEC-flanged 3-phase AC motor.
The impeller is hydraulically as well as
dynamically balanced.
The pump has the following characteristics:
- flange dimensions according to
EN 1092-2,
- Cast iron volute
pump housing,
- stainless steel shaft
and Cast iron impeller
and bronze wear rings,
- unbalanced mechanical shaft seal
according to EN 12756.
Liquid temperature range: 0 .. 120 °C
Speed for pump data: 2940 rpm
Rated voltage: 3 x 380-415 D / 660-690 Y V
Enclosure class (IEC 34-5): IP55
Insulation class (IEC 85): F
Shaft seal: BAQE
Curve tolerance: ISO 9906 Annex A
Pump housing: Cast iron
EN-GJL-250 DIN W.-Nr.
A48-40 B ASTM
Impeller: Cast iron
EN-GJL-200 DIN W.-Nr.
A48-30 B ASTM

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