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); versin with pump casing and lantern bracket/casing cover in bronze (the pumps are supplied fully painted)
Connections : flanges according to PN, EN 1092-2.
Counter-flanges (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 circulation plants.
For civil and industrial applications.
For fire fighting applications. For Irrigations
Operating conditions
- Liquids 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, 5o Hz (n ≈ 2900 rpm)
- NM, NMS ; three-phase 230/400 V ±10% up to 3 kW; 400/690 V ±10% from 4 up 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 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 constructiona)
- Single phase motor (NM standard construction)
- 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 ; 7.5 kW, 10 Hp
- Maximum suction lift : 1-2 m
- Kapasiatas Pompa (Q) : Total Head (H)
30 M3 (500 l/min) : 38.5 m
33 M3 (5500 l/min) : 38 m
37.8 M3 (630 l/min) : 37.5 m
42 M3 (650 l/min) : 36.5 m
48 M3 (700 l/min) : 34.5 m
54 M3 (900 l/min) : 32.5 m
60 M3 (1000 l/min) : 30 m
66 M3 (1100 l/min) : 27 m
69 M3 (1150 l/min) : 25.5 m
72 M3 (1200 l/min) : 24 m
75 M3 (1250 l/min) : 22.5 m
78 M3 (1300 l/min) : 20.5 m
81 M3 (1350 l/min) : 19 m - Weight : 80 kg