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 dimension 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) : screwed flanges 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 Condition
- 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 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 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 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 : 18.5 kW, 25 Hp
- Maximum suction lift 1-2 m
- Kapasitas Pompa (Q) : Total Head (H)
24 M3 (400 l/min) : 80.5 m
27 M3 (450 l/min) : 80.5 m
30 M3 (500 l/min) : 80 m
33 M3 (550 l/min) : 79.5 m
37.8 M3 (550 l/min) : 78.5 m
42 M3 (650 l/min) : 77 m
48 M3 (700 l/min) : 74.5 m
54 M3 (900 l/min) : 71.5 m
60 M3 (1000 l/min) : 67 m
66 M3 (1100 l/min) : 61.5 m
69 M3 (1150 l/min) : 58.5 m - Weight : – kg