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 Flanges ( on request ) : screwed Flanges EN 1092-1, PN 16
Applications
For clean liquids without abrasives, which are non-aggressive 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 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 ( 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 onverter up to 0,75 kW.
Materials
| Components | NM, NMS | B-NM, B-NMS |
| Pump casing Lantern bracket NM Casing cover for NMS |
Cast Iron GJL 200 EN 1561 |
Bronze G-Cu Sn 10 EN 1982 |
| Lantern bracket NMS | Cast Iron GJL 200 EN 1561 | |
| 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, 32L/20, 40/20 |
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| Shaft | Cr-Ni steel AISI 303 AISI 430 from 3 kW to 22 kW |
Cr Ni Mo steel AISI 316 |
| Mechanical seal | Carbon-Ceramic-NBR | |
| Counter-flanges | Steel Fe 4308 UNI 7070 | |
Specifications
- Rated motor power output : 5.5 kW, 7.5 Hp
- Maximum suction lift 1-2 m.
- Kapasitas Pompa ( Q ) : Total Head ( H )
15 M3 ( 250 l/min ) : 55 m
16,8 M3 ( 280 l/min ) : 54.5 m
18,9 M3 ( 315 l/min ) : 54 m
21 M3 ( 350 l/min ) : 53 m
24 M3 ( 400 l/min ) : 51 m
27 M3 ( 450 l/min ) : 49m - Weight : 75 kg
