Calpeda Pump NMD 20/110B/A close coupled centrifugal pump; electric motor with extended shaft directly connected to the pump.
NMD series with two back to back impellers (with axial thrust balancing). This version with pump casing and lantern bracket in bronze ( the pumps are supplied fully painted)
Application :
Calpeda Pump NMD 20/110B/A close coupled centrifugal pump can be used for :
- Clean liquids without abrasives, which are non-aggressive for the pump materials (solids content up to 0.2%)
- Water supply
- Heating, air-conditioning, cooling and circulation plants
- Civil and industrial applications
- Fire fighting applications
- Irrigation
Operating Conditions :
- Liquid temperature from -10 deg. C to +90 deg. C
- Ambient temperature up to 40 deg. C
- Total suction lift up to 7 m
- Maximum permissible working pressure up to 10 bar
- Continuous duty
Motor :
- 2 pole induction motor, 50 Hz (2900 rpm)
- Three phase
230/ 400 V +/- 10% up to 3 kW
400/ 690 V +/- 10% from 4 to 9,2 kW - Insulation class F
- Protection IP 54
- Motor suitable for operation with frequency converter from 1,1 kW
Materials :
| Pump casing Lantern bracket | Cast iron |
| Impeller | Brass |
| Shaft | Stainless steel |
| Mechanical seal | Carbon – ceramic – NBR |
Special Features on Request :
- Other voltages
- Protection IP 55
- Frequency 60 Hz
- Special mechanical seal
- Higher or lower liquid or ambient temperature
- Motor suitable for operation with frequency converter up to 0.75 kW
Specification :
| Pump Model | NMD 20/110B/A |
| Capacity | 3 m³/h |
| Head | 23 meter |
| Input | 1.25 inch |
| Output | 1 inch |