Construction
Close-coupled centrifugal pumps; electric motor with exteded shaft directly connected to the pump up 22 kW, new bracket construction for standard motors (stub-shaf construction) from 30 to 75 kW with integrated thrust bearing.
Pump casing with axial suction and radial delivery on top, main dikensions and performance according to EN 733.
NM(S) : versionn with pump casing and lantern bracket n cast iron.
B-NM(S) : version with pump casing and lantern bracket/casing cover in bronze. (the pumps are supplied fuy painted).
Connections : Flanges according to PN10, EN 1092-2.
Counter-flanges (on request) : Flanges for welding EN 1092-2, 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 Conditions
- Liquid temperature from -10°C +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 65/12,16,20,15; 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 ±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 three-phase motors from 0.75 kW
- Contructed 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 Output : 37 kW, 50 Hp
- Kapasitas Pompa (Q) : Total Head (H)
108 m3 (1800 l/min) : 54 m
120 m3 (2000 l/min) : 53.5 m
132 m3 (2200 l/min) : 53 m
150 m3 (2500 l/min) : 52.5 m
168 m3 (2800 l/min) : 51.5 m
180 m3 (3000 l/min) : 50.5 m
192 m3 (3200 l/min) : 49.5 m
210 m3 (3500 l/min) : 48 m
240 m3 (4000 l/min) : 44 m
270 m3 (4500 l/min) : 38.5 m
300 m3 (5000 l/min) : 32 m - Weight : 287 kg