Calpeda NM4 Close Coupled Centrifugal Pumps

Calpeda NM4 Close Coupled Pumps
NM4 Close Coupled Centrifugal Pumps

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 EN 733 with additional sizes for completion.


- 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.

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.
Continuous duty.

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 60034.

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.

Download Calpeda NM4 Close Coupled Centrifugal Pumps Catalogue