Construction
Close-coupled centrifugal pumps; electric motor with extended shaft directly conected 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 suxtion and radial delivery on top, main dimensions and performance according to EN 733.
NM(S) : version with pump casing and lantern bracket n 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) : Screwed flanges EN 1092
Applications
For clean liquids without abrasives, which are non-aggresive for the pump materias (solid 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
- 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 10 bar (16 bar for NM 32L/16,20; NM 40/16,20, NM 50/12,16; NM 65/12,16,20,25; NM 100/20).
- Continuous duty
Motor
- 2-pole induction motor, 5o 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 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
- 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 : 5.5 kW, 7.5 Hp
- Maximum suction lift 1-2 m
- Kapasitas Pompa (Q) : Total Head (H)
15 M3 (250 l/min) : 55 m
16.8 M3 (280 l/min) : 54.5 m
18.9 M3 (315 l/min) : 54 m
21 M3 (350 l/min) : 53 m
24 M3 (400 l/min) : 51 m
27M3 (450 l/min) : 49 m - Weight : 75 kg