Close Coupled centrifugal Pump CALPEDA NM 32/16B/A


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 ) : Flanges for welding EN 1092-1, PN 10

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 NM 2L/16,20; NM 40/16,20; NM 50/12,16; NM 65/12,16,20,25; NM80/16; 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.
  • Packed 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
Latern Bracket NM
Casing 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 1561
Bronze
G-Cu Sn 10 EN 1982
Brass P-Cu Zn 40 Pb 2 UNI 5705 for 32/12, 32/16, 32/20, 32L/20, 40/20
Shaft Cr-Ni steel AISI 303AISI 430 from 3 kW TO 22 kW Cr Ni Mo steel
AISI 316
Mechanical seal Carbon-Ceramic-NBR
Counter-Flanges Steel Fe 4308 UNI 7070

Specifications

  • Rated Power Motor Output : 1,5 kW, 2 HP
  • Weight : 38.5 kg

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