Close Coupled Centrifugal Pump CALPEDA NM 32/12DE


Construction

Close-coupled centrifugal pumps; electric motor with extended shaft directly connected to the pump up to 22 kW, new bracket construction for standard motors ( stub-shaft construction ) from 30 to 75 kW with integrated thrust bearing.

Pump casing with axial suction and radial delivery on top, main dimensions and performance according to EN 733.

NM(S) : version with pump casing and lantern bracket in cast iron.
B-NM(S) : version with pump casing and lantern bracket/casing cover in bronze. ( the pumps are supplied fully painted ).
Connections : Flanges according to PN 10, EN 1092-2.
Counter-Flanges ( On request ) : Screwed flanges EN 1092-1, PN 16

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 -100C to +900C
  • Ambient temperature up to 400C
  • Total suction lift up to 7 m
  • Maximum permissible working pressure up to 10 bar ( 16 bar for NM 32L/16,20; NM 40/16,20; NM 50/12,16; NM 65/12,16,20,25; NM 80/16; NM 100/20 ).
  • Continuous duty.

Motor

  • 2-pole induction motor, 50 Hz ( n ≈ 2900 rpm ).
  • NM, NMS : 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 ( IP 55 for NMS )
  • Motor suitable for operation with frequency converter from 1,1 kW.
  • Classification scheme IE3 for three-phase motors from 0,75 kW.
  • Constructed in accordance with : EN 60034-1; EN 60034-30-1.

Special features on request

  • Other voltages.  – Frequency 60 Hz ( as per 60 Hz data sheet ).
  • Protection IP 55. – Special mechanical seal.
  • Packe gland ( only for NM standard construction ).
  • Single-phase motor ( NMM ) up to 1,5 kW
  • Higher or lower liquid or ambient temperatures.
  • Motor suitable for operation with frequency converter up to 0,75 kW.

Materials

Components NM, NMS B-NM, B-NMS
Pump Casing
Lantern bracket NM
Caing cover for NMS
Cast Iron
GJL 200 EN 1561
Bronze
G-Cu Sn 10 EN 1982
Lantern bracket NMS Cast iron GJL 200 EN 1561 Cast iron GJL 200 EN 1561
Impeller Cast iron
GJL 200 EN 1561Brass P-Cu Zn 40 Pb 2 UNI 5705 For 32/12, 32/16, 32/20, 32L/20, 40/20
Bronze
G-Cu Sn 10 En 1982Brass P-Cu Zn 40 Pb 2 UNI 5705 For 32/12, 32/16, 32/20, 32L/20, 40/20
Shaft Cr-Ni steel AISI 303 

AISI 430 from 3 kW to 22 kW

Cr Ni Mo steel AISI 316
Mechanical Seal Carbon-Ceramic-NBR Carbon-Ceramic-NBR
Counter-Flanges Steel Fe 430B UNI 7070 Steel Fe 430B UNI 7070

Specifications

  • Rated motor power output : 0,75 kW, 1 HP
  • Weight : 27 kg

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