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NM4 |
Close Coupled Centrifugal Pumps
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n 1450 rpm |
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Construction |
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Close-coupled centrifugal pumps; electric motor with
extended shaft directly connected to the pump. Pump casing with axial suction
and radial delivery on top, main dimensions and performance according to DIN
24255 with additional sizes for completion.
| Connections |
| Sizes |
Connections |
| NM4 25/125, 25/160, 25/200 |
Threaded ports ISO 228 |
| from NM4 32/16 to NM4 150/400 |
Flanges according to UNI 2236, UNI 2237,
PN 10 |
| Counter-flanges (on request) |
| Sizes |
Flanges |
| from NM4 32/16 to NM4 50/25. |
Screwed flanges UNI 2247, PN 16 |
| from NM4 32/16 to NM4 150/400 |
Flanges for welding UNI 2277, UNI 2278,
PN 10 |
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Applications |
- For clean liquids without abrasives,
which are
non-aggressive for the pump materials
(contents of solids up to 0.2%).
- For water supply.
- For heating, air conditioning, cooling and circulation
plants.
- For civil and industrial applications.
- When low noise operating is required.
- For irrigation. |
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Operating conditions |
Liquid temperature up to 90° C.
Ambient temperature up to 40° C.
Total suction lift up to 7 m.
Maximum permissible working pressure up to 10 bar.
Continuous duty. |
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Motor |
4-pole induction motor, 50 Hz (n = 1450 rpm).
NM4: three-phase 230/400 V ± 10% up to 3 kW;
400/690 V ± 10% from 4 to 75 kW;.
Insulation class F.
Protection IP 54.
Constructed in accordance with IEC 34. |
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Special features on request |
- Other voltages.
- Frequency 60 Hz (as per 60 Hz
data sheet).
- Protection IP 55. - Special mechanical seal.
- Higher liquid or ambient temperatures. |
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Warranty |
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One year (as per our general sale conditions). |
