CALPEDA NM Close Coupled Centrifugal Pumps With Flanged Connections.

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.

Construction

• Close coupled cenrifugal pumps; electric motor with extended shaft directly connected to the pump.
• Pump casing with axial suction and radial delivery on top, main dimensions and performance according to EN 733.
• Connections: Flanges according to UNI 2236, UNI 2237, PN10
• Counter flanges (on request): NM32 to NM50 = Screwed flanes UNI 2247, PN16; NM65 to NM100/250 = slip on welding flanges UNI 2277, UNI 2278, PN10

Operating Conditions

• Liquid temperature up to 90°C.
• Room temperature up to 40°C.
• Total suction lift up to 7m.
• Maximum permissable working pressure up to 10 bar.
• Continuous duty.

Materials

Components	NM	B-NM	I-NM
Pump casing Lantern bracket	Cast iron 200 ISO 185	Bronze G-Cu Sn 10 UNI 7013	Cr-Ni-Mo steel AISI 316
Impeller	Cast iron 200 ISO 185	Bronze G-Cu Sn 10 UNI 7013
	Brass P- Cu Zn 40 Pb 2 UNI 5705 For NM 32/12- 16-20, NM 40/200 B-NM 32/125- 160-200, B-NM 40/200
Mechanical seal	Carbon-Ceramic
Counter-flanges	Steel Fe 430B UNI 7070

Motor

• 2 Pole induction motor, 50Hz (n=2900 1/min).
• NM : 3ph 230/400V ± 10% up to 3kW; 400/690V ± 10% from 4 to 75kW.
• Insulation class F.
• Protection IP54.
• constructed in accordance with IEC 34.

Special Features On Request

• Other voltages.
• Frequency 60Hz.
• Protection IP55.
• Special mechanical seal.
• Packed gland (only for NM standard construction).
• 1ph motor (NMM) up to 1.5kW. - Motor EEx-d II B T4.
• Higher liquid or ambient temperatures.

Please click here for a technical data sheet (230kb)