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.
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 (solids content up to 0.2%). For water supply
For heating, air conditioning, cooling and circulation plants.
For civil and industrial applications.
For fire fighting applications. For Irrigation.
Operating conditions
- Liqui 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 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 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 (IP55 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 voltages. 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
Materials
| Component | NM. NMS | B-NM, B-NMS |
| Pump casing Lantern Bracket Nm Casing cover for NMS | Cast Iron | Bronze |
| GJL EN 1561 | G-Cu Sn 10 EN 1982 | |
| Impeller | Cast Iron, GJL 200 EN 1561 | Bronze G-Cu Sn 10 EN 1982 |
| Brass P-CU ZN 40 Pb 2 UNI 5705 for 32/12, 32/16, 32/20, 321/20, 40/20 | ||
| Shaft | Cr-Ni Steel AISI 303AISI 430 from 3 kW to 22 kW | Cr Ni Mo Steel AISI 316 ̴ |
| Mechanical seal | Carbon-Ceramic-NBR | |
| Counter – Flanges | Steel Fe 430B UNI 7070 |
Specifications
- Rated Motor Power Output : 30 kW, 40 HP
- Kapasitas Pompa (Q) : total head (H)
108 m3 (1800 l/min) : 45 m
120 m3 (2000 l/min) : 44.5 m
132 m3 (2200 l/min) : 44 m
150 m3 (2500 l/min) : 43.5 m
168 m3 (2800 l/min) : 42.5 m
180 m3 (3000 l/min) : 41.5 m
192 m3 (3200 l/min) : 40.5 m
210 m3 (3500 l/min) : 39 m
240 m3 (4000 l/min) : 34.5 m
270 m3 (4500 l/min) : 29 m
300 m3 (5000 l/min) : 22 m - Weight : 287 kg