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 ( 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
| 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 )
30 M3 ( 500 l/min ) : 31 m
33 M3 ( 550 l/min ) : 30.5 m
37.8 M3 ( 630 l/min ) : 29.5 m
42 M3 ( 650 l/min ) : 28 m
48 M3 ( 700 l/Min ) : 26 m
54 M3 ( 900 l/Min ) : 24 m
60 M3 ( 1000 l/Min ) : 21.5 m
66 M3 ( 1100 l/Min ) : 19 m
69 M3 ( 1150 l/Min ) : 17.5 m
72 M3 ( 1200 l/Min ) : 15.5 m
75 M3 ( 1250 l/Min ) : 13.5 m
78 M3 ( 1300 l/Min ) : 11.5 m
81 M3 ( 1350 l/Min ) : 9.5 m - Weight : 74.5 kg
