Calpeda NM & NMD Close Coupled Centrifugal Pumps

– 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 lanter bracket in cast iron.

Key Details

– 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.