Nocchi NRM

Summary

Product identification

The NRM series consists of NOCCHI standardized monobloc centrifugal pumps, available in 2-pole and 4-pole configurations. These are monobloc single impeller models with the hydraulic section and motor connected via the housing. The pump body is constructed in compliance with standard EN733/DIN24255.

Pumps can be installed in all positions, except with the suction port directed upwards.

Applications

• Central heating and air conditioning systems.
• Collection of water from lakes, rivers, wells.
• Gravity and sprinkler irrigation systems.
• Water supply, fire fighting and pressure booster systems.

Operating limits

• Ambient temperature: 40°C
• Pumped liquid temperature: -10°C to +130°C
• Maximum operating pressure: 10 bar

Feed water

• Type of liquid: non aggressive, non explosive, free of solid bodies and fibers.

Electrical

• Motor type: Induction, closed, ventilated
• Protection rating: IP 55
• Insulation class: F
• Construction design: B3/B5
• Speed of rotation:
  • NRM4: 1450 rpm
  • NRM4: 2900 rpm

Mechanical / hydraulic

Materials of Construction:

• Pump body: Cast iron EN GJL 200 (ex G20)
• Motor bracket: Cast iron EN GJL 200 (ex G20)
• Impeller: Cast iron EN GJL 200 (ex G20) (AISI 304 on request)
• Shaft: Stainless steel AISI 420
• Mechanical gasket: Silicon carbide/Silicon carbide/NBR

Flange Dimensions (UNI PN16):

• DN 32: a1 78, b1 100, c1 140, d1 4, e1 18
• DN 40: a1 83, b1 110, c1 150, d1 4, e1 18
• DN 50: a1 102, b1 125, c1 165, d1 4, e1 18
• DN 65: a1 122, b1 145, c1 185, d1 4, e1 18
• DN 80: a1 138, b1 160, c1 200, d1 8, e1 18
• DN 100: a1 158, b1 180, c1 220, d1 8, e1 18
• DN 125: a1 188, b1 210, c1 250, d1 8, e1 18

Performance and Dimensions:

Detailed performance tables (flow rate Q in L/min and m³/h vs. head in m.c.a. / m.w.c.), electrical data (P2 HP/kW, Volt, In A), and overall dimensions (mm) and weights (kg) are provided for various NRM2 and NRM4 models.

• NRM2 models include: 50x32, 65x40, 65x50, 80x65, 100x80, 125x100.
• NRM4 models include: 50x32, 65x40, 65x50, 80x65, 100x80, 125x100, 150x125, 200x150.

See the official PDF for exact tabulated values for specific models.

Efficiency:

• MEI ≥ 0.1
• MEI reference ≥ 0.70

Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used for the project.

Official datasheet (PDF)

Lenntech datasheet mirror