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 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-fanges (on request) : Screwed flanges EN 1092-1, pN 16.
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 circulations 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 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 = 2900rpm)
- 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-phase motors from 0,75 kW
- Constructed in accordance with : 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 : 4 kW, 1.5 HP
- Maximum suction lift 1-2 m
- Kapasitas Pompa (Q) : Total Head (H)
9.6 m3 (160 l/min) : 42.1 m
10.8 m3 (180 l/min) : 41.8 m
12 m3 (200 l/min) : 41.5 m
13.2 m3 (220 l/min) : 40.2 m
15 m3 (250 l/min) : 40.2 m
16.8 m3 (280 l/min) : 38.9
18.9 m3 (315 l/min) : 37 m
21 m (350 l/min) : 34.5 m
24 m3 (400 l/min) : 29.7 m
27 m3 (450 l/min) : 23.8 m - Weight : 58.3 kg