Nocchi DHI

Summary

Product identification

• Nocchi DHI series: Multi-cell centrifugal pumps.
• Hydraulics constructed from AISI 316 stainless steel.
• Horizontal configuration.
• Key advantages: High hydraulic performance (pressure and flow rate), minimal electrical energy consumption, ultra-silent operation.

Applications

• Handling of aggressive liquids.
• Lifting and distribution of water in domestic systems (continuous or intermittent duty).
• Pressure booster systems.
• Washing, garden irrigation, fountains.

Operating limits

• Maximum liquid temperature: 90°C.
• Maximum recommended suction height: 6 m with foot valve (with liquid temperature at 50°C).
• Maximum operating pressure:
  • 10 bar (with liquid temperature at 50°C)
  • 6 bar (with liquid temperature at 90°C)

Feed water

• Type of liquid: Clean water without suspended solid bodies or abrasive material.

Electrical

• Motor type: Asynchronous.
• Motor enclosure: Closed, ventilated from exterior.
• Protection rating: IP 44.
• Insulation class: F.
• Rotation speed: 2850 rpm.
• Duty: Continuous.
• Power supply:
  • Single phase: Permanently activated capacitor and thermal cutout protection incorporated in the motor winding.
  • Three phase: External protection to be fitted by the user.

Mechanical / hydraulic

Materials of Construction

• Pump body: Stainless steel X CrNiMo 17-12-03 (AISI 316)
• Motor bracket: Die cast aluminum
• Impeller: Stainless steel X CrNiMo 17-12-03 (AISI 316)
• Intermediate chamber: Stainless steel X CrNiMo 17-12-03 (AISI 316)
• Motor shaft: Stainless steel X CrNiMo 17-12-03 (AISI 316)
• Mechanical gasket: Graphite
• Counterface: Ceramic
• Seal holder flange: Stainless steel X CrNiMo 17-12-03 (AISI 316)
• Seals: EPDM

Connections

• DNA (Suction): 1” 1/4
• DNM (Discharge): 1” 1/4

Performance Data

The document provides detailed performance tables for DHI 2 and DHI 4 models, including motor output (HP, kW), absorbed power (HP, kW), voltage, current (In A), capacitor (μF), flow rate (Q in L/min and m³/h), and head (m.c.a. / m.w.c.). See the official PDF for exact tabulated values.

Dimensions and Weights

The document provides overall dimensions (A, B, C, D, E, F in mm) and net weights (kg) for DHI 2-40, DHI 2-60, DHI 2-70, DHI 4-30, DHI 4-40, and DHI 4-50 models. See the official PDF for exact tabulated values.

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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 for any project must always match the specific OEM PDF revision used for that project.

Official datasheet (PDF)

Lenntech datasheet mirror