Centrifugal Pump Calpeda B-NM 32L/16B

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; NM100/20 ).
• 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 Lantern 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
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 : 3 kW, 4 HP
• Maximum suction lift 1-2 m
• Kapasitas Pompa ( Q ) : Total Head ( H )
  9,6 M³ ( 160 l/min ) : 30.4 m
  10,8 M³ ( 180 l/min ) : 30.3 m
  12 M³ ( 200 l/min ) : 30.2 m
  13.2 M³ ( 220 l/min ) : 30 m
  15 M³ ( 250 l/min ) : 29.6 m
  16,8 M³ ( 280 l/min ) : 29 m
  18,9 M³ ( 315 l/min ) : 28.1 m
  21 M³ ( 350 l/min ) : 26.8 m
  24 M³ ( 400 l/min ) : 24.2 m
  27 M³ ( 450 l/min ) : 20.8 m
  29 M³ ( 450 l/min ) : 17.9 m
• Weight : 49.5 kg