Construction
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 bearing).
Pump casing with axial suction and radial delivery on top, main dimensions and performance according to EN 733.
NM(S) : version with pump casing and lantern bracket in cast iron.
B-NM(S) : version with pump casing and lantern bracket/casing cover in bronze. (the pumps are supplied fully painted).
Connections : Flanges according to PN 10, EN 1092-2
Counter-flanges (on request) : Flanges for welding EN 1092-1, PN 10
Applications
For clean liquids without abrasives, which are non aggresive for the pump materials (solid content up to 0.2%). For water supply
For heating, air conditioning, cooling and circulation plants.
For civil and industrial applications.
For fire applications. For Irrigation
Operating Conditions
- Liquid temperature -10°C to +90°C
- Ambient temperature up to 40°C
- Total suction lift to 7 m
- Maximum permissible working pressure up to 10 bar (16 bar for NM 32L/16,20; NM 40/16,20; NM 50/12,16; NM 65/12.16,20,25; NM 80/16; NM 100/20
- Continuous duty
Motor
- 2-pole induction motor, 50 Hz (n = 2900 rpm)
- NM, NMS : there phase 230/400 V±10% up to 3 kW; 400/690 V ± from 4 to 75 kW
- Insuation class F. Protection IP 54 (IP 55 for NMS)
- Motor suitable for operation with frequency converter from 1.1 kW
- Classification scheme IE3 for three-phase motors from 0.75 kW
- Constructed in accordance with : EN 60034-1; EN 60034-30-1.
Special features on request
- Other volatges. Frequency 60 Hz (as per 60 Hz data sheet)
- Protection IP 55. Special mechanical seal
- Packed gland (only for NM standard construction)
- Single-phase motor (NMM) up to 1.5 kW
- Higher or lower liquid or ambient temperatures
- Motor suitable for operation with frequency converter up to 0.75 kW