Construction
Close-coupled centrifugal pumps, electric motor with extended shaft directly connected to the pumpup to 75 kW with integrated thrust bearing.
Pump casing with axial suction and radial 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 supllied fully painted)
Connections : Flanges according to PN 10, EN 1092-2
Counter-flanges (on request) : Screwed flanges EN 1092-1, PN 16
Applications
For clean liquids with 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
- Liquid temperature from -10°C to +90°C
- Ambient temperature up to 40°C
- Total suction lift up t0 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 : three-phase 230/400 V ±10% up 3 kW. 400/690 V ± 10% from 4 to 75 kW
- 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 50 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 : 1.1 kW, 1.5 Hp
- Maximum suction lift 1-2 m
- Kapasitas Pompa (Q) : Total Head (H)
15 M3 (250 l/min) : 14 m
16.8 M3 (280 l/min) : 13.5 m
18.9 M3 (315 l/min) : 13 m
21 M3 (350 l/min) : 12 m
24 M3 (400 l/min) : 11 m
27 M3 (450 l/min) : 9.5 m
30 M3 (500 l/min) : 8 m
33 M3 (550 l/min) : 6 m - Weight : 31 kg