Centrifugal Pump Calpeda NM 32/20A/B


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 ) : 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 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.

Special features on request

  • Other voltages.  – Frequency 6 Hz ( as per 60 Hz data sheet ).
  • Protection IP 55.  – Special mechanical seal.
  • Packed glan ( 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
Casing cover for NMS
Cast iron
GJL 200 EN 1561
Bronze
Lantern bracket NMS 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 430B UNI 7070

Specifications

  • Rated motor power output : 4 kW, 5.5 HP
  • Maximum suction lift 1-2 m
  • Kapasitas Pompa ( Q ) : Total Head ( H )
    6,6 M3 ( 110 l/min ) : 57,5 m
    7,5 M3 ( 125 l/min ) : 57 m
    8,4 M3 ( 140 l/min ) : 56 m
    9,6 M3 ( 160 l/min ) : 55,5 m
    10,8 M3 ( 180 l/min ) : 55 m
    12 M3 ( 200 l/min ) : 54,5 m
    13.2 M3 ( 220 l/min ) : 53,5 m
    15 M3 ( 220 l/min ) : 51,5 m
    16,8 M3 ( 220 l/min ) : 49 m
  • Weight : 51 kg

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