Centrifugal Pump Calpeda B-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 ) : Screwed flanges EN 1092-1, PN 16

Applications:

For clean liquids without abrasives, which are non-aggresive 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 60034-30-1.

Special Features on request

• Other voltages. -Frequency 60 Hz ( as per 60 Hz data sheet ).
• Protection IP 55. – Special mechanical seal.
• Packed gland ( only 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 303 AISI 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