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NM, NMD |
Close Coupled Centrifugal Pumps
with threaded ports |
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Construction |
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Close-coupled, centrifugal pumps; electric motor
with
extended shaft directly connected to the pump.
NM: single-impeller
NMD: with two back-to-back impellers
(with axial thrust
balancing).
Connections: threaded ports ISO 228/1 (BS 2779). |
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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 irrigation. |
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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 pumps NMD 25/190; NMD 32/210;
NMD 40/180).
Continuous duty. |
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Motor |
2-pole induction motor,
50 Hz (n = 2900 rpm).
NM, NMD: three-phase
230/400 V ± 10% up to 3 kW;
400/690 V ± 10% from 4 to 9,2 kW;
NMM, NMDM: single-phase
230 V ± 10%, with thermal protector.
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 or lower liquid or ambient temperatures. |
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