Centrifugal Water Pump CALPEDA NMM 25/12B/A 0,75Hp 230V 50Hz Heavy Duty Z5

NM, NMD Calpeda Close Coupled Centrifugal Pumps with threaded ports

CONSTRUCTION

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).
NM, NMD: version with pump casing and lantern bracket in cast iron.
B-NM, B-NMD: version with pump casing and lantern bracket in bronze. (the pumps are supplied fully painted).

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 pumps NMD 25/190; NMD 32/210; NMD 40/180).
Continuous duty.

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.
Classification scheme IE2 for three-phase motors from 0,75 Kw to 5,5 kW, IE3 from7,5 kW.
Constructed in accordance with EN 60034-1; EN 60034-30. EN 60335-1, EN 60335-2-41.

SPECIAL FEATURES ON REQUEST

Other voltages.
Frequency 60 Hz
Protection IP 55.
Special mechanical seal
Higher or lower liquid or ambient temperatures.
Motor suitable operation with frequency converter.