NM, NMS
Close coupled centrifugal pumps with flanged connections
SCOPE
1 / 480
m³/h
PREVALENCE
3 / 95
m
POWER
0.25 / 75
kW
, 
, 
Execution
Close-coupled centrifugal pumps; electric motor with extended shaft directly connected to the pump up to 22 kW, new bracket construction for standard motors (stub-shaft construction) from 30 to 75 kW with integrated thrust bearing.
Pump casing with axial suction and radial delivery on top, main dimensions and performance according to EN 733 with additional sizes for completion.
NM(S): version with pump casing and lantern bracket in cast iron.
BNM(S): version with pump casing and lantern bracket/casing cover in bronze.
The pumps are supplied fully painted.
Version with frequency converter (on request)
Applications
For clean liquids without abrasives, which are non-aggressive for the pump materials (solids content up to 0.2%).
For water supply.
For heating, air-conditioning, cooling and circulation plants.
For civil and industrial applications.
For irrigation.
Operating conditions
Liquid temperature from -10 °C to +90 °C.
Ambient temperature up to 40° C.
Total suction lift up to 7 m.
Maximum permissible working pressure up to 16 bar (10 bar for NM 32/12,16,20; NM 40/12,25; NM 50/20,25, NM 100/25 and bronze version).
Continuous duty.
Motor
2-pole induction motor, 50 Hz (n ≈ 2900 rpm).
NM, NMS: three-phase 230/400 V ± 10% up to 3 kW;
400/690 V ± 10% from 4 to 75 kW.
Insulation class F.
Protection IP 54 (IP 55 for NMS).
Motor suitable for operation with frequency converter.
IE3 efficiency class for three-phase motors (IE2 up to 0.65 kW).
Constructed in accordance with: EN 60034-1; EN 60034-30-1.
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Case History
Case History
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