Close Coupled Centrifugal Pump CALPEDA B-NM 50/160B/B

Construction

Close-coupled centrifugal pumps, electric motor with extended shaft directly connected to the oump 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 dimension 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 lanterm bracket/casing cover in bronze (the pumps 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-aggresive for the pump materials (solid content up to 0.2%0. For water supply.
For heating air conditioning, cooling and circulation plants.
For civil and industrial applications.
For fire fihting 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 from 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 up to 75 kW
  • Insuation class F. Protection IP 54 (IP 55 for NMS)
  • Motor suitable for operation with frequency cnverter 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

ComponentNM. NMSB-NM, B-NMS
Pump casing  Lantern Bracket Nm Casing cover for NMSCast IronBronze
 GJL EN 1561G-Cu Sn 10 EN 1982
ImpellerCast Iron, GJL 200 EN 1561Bronze G-Cu Sn 10 EN 1982
 Brass P-CU ZN 40 Pb 2 UNI 5705 for 32/12, 32/16, 32/20, 321/20, 40/20 
ShaftCr-Ni Steel AISI 303AISI 430 from 3 kW to 22 kWCr Ni Mo Steel AISI 316
Mechanical sealCarbon-Ceramic-NBR 
Counter – FlangesSteel Fe 430B UNI 7070 

Specifications

  • Rated motor power output : 5.5 kW, 7.5 Hp
  • Maximum suction lift 1-2 m
  • Kapasitas Pompa (Q) : Total Head (H)
    30 M3 (500 l/min) : 31 m
    33 M3 (550 l/min) : 30.5 m
    37.8 M3 (630 l/min) : 29.5 m
    42 M3 (650 l/min) : 28 m
    48 M3 (700 l/min) : 26 m
    54 M3 (900 l/min) : 24 m
    60 M3 (1000 l/min) : 21.5 m
    66 M3 (1100 l/min) : 19 m
    69 M3 (1150 l/min) : 17.5 m
    72 M3 (1200 l/min) : 15.5 m
    75 M3 (1250 l/min) : 13.5 m
    78 M3 (1300 l/min) : 11.5 m
    81 M3 (1350 l/min) : 9.5 m
  • Weight : 74.5 kg

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