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 latern 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): Flanges for welding 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 application. 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 (1 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, NMMS : three-phase 230/400 V ±10% up to 3 kW 400/690 V ±10% up to 3 kW
- Insulation clss F. Protection IP 54 (IP 55 for NMS)
- Motor suitable for operating with frequency converter fro 1.1 kW
- Classification scheme IE3 for three-phase motors from 0.75 kw
- Constructed in according 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 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 kW, 25HP
- Kapasitas Pompa (Q) : Total Head (H)
75 M3 (1250 l/Min): 39.9 m
84 M3 (1400 l/Min): 39.6 m
96 M3 (1600 l/Min): 39 m
108 M3 (1800 l/Min): 38.2 m
120 M3 (2000 l/Min): 37.4 m
132 M3 (2200 l/Min): 36.4 m
150 M3 (2500 l/Min): 34.5 m
168 M3 (2800 l/Min): 32.2 m
180 M3 (3000 l/Min): 30.3 m
192 M3 (3200 l/Min): 28.1 m - Weight : -kg