Calpeda Closed Coupled Centrifugal Pumps NM4016A 50H36S With Flanged Connections For Special Applications

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.
Pump casing and lantern bracket in cast iron.

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 16 bar.
• Continuous duty.

MOTOR

• 2-pole induction motor, 60 Hz (n ¢â¬¹ ¢â¬œ 3450 rpm).
• Three-phase 220/380 V, 220/440 V, up to 3 kW;380/660 V, 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.

MATERIALS

• Pump casing: Cast iron.
• Lantern bracket: GJL 200 EN 1561.
• Impeller: Brass CW510L (lead free public LAW 111-380).
• Shaft: Cr steel AISI 430.
• Cr Ni steel AISI 303
• Mechanical seal: Carbon- Ceramic- NBR.
• Counter-flanges: Steel Fe 430B UNI 7070

SPECIAL FEATURES ON REQUEST

• Other voltages.
• Special mechanical seal
• Higher or lower liquid or ambient temperatures.