Nocchi DHR

Summary

Product identification

• Nocchi DHR Multi-Cell Centrifugal Pumps
• Non self-priming horizontal centrifugal pumps.
• Features: Low energy consumption, ultra-silent operation.
• Impellers and diffusers in 100% AISI 304 stainless steel.
• Threaded ports with provision for oval connectors (DHR 9 range).

Applications

• Lifting and distribution of water in domestic systems, with continuous or intermittent duty.
• Pressure booster systems.
• Washing, garden irrigation, fountains.

Operating limits

• Type of liquid: Clean water without suspended solid bodies or abrasive material.
• Maximum liquid temperature: 90°C.
• Maximum ambient temperature: 50°C.
• Maximum recommended suction height: 6 m with foot valve (with liquid temp. at 50°C).
• Maximum operating pressure:
  • 10 bar (with liquid temp. at 50°C)
  • 6 bar (with liquid temp. at 90°C)

Materials

All rotary parts in contact with the pumped liquid are in AISI 304 stainless steel.

• Suction flange: Die cast aluminum
• Support: CAST IRON GJL-200 (ASTM Class 35)
• Impellers: Stainless steel X5CrNi18-10 (AISI 304)
• Diffusers: Stainless steel X5CrNi18-10 (AISI 304)
• Sleeve: Stainless steel X5CrNi18-10 (AISI 304)
• Shaft: Stainless steel X5CrNi18-10 (AISI 304)
• Seals: NBR
• Mechanical gasket: Ceramica / Graphite / NBR

Electrical

• Motor type: Closed, ventilated from exterior.
• Protection rating: IP 54.
• 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.

Hydraulic Performance

Performance tables are available for DHR 2, DHR 4, and DHR 9 models, detailing:

• Motor output (HP, kW)
• Absorbed power (HP, kW)
• Voltage (V)
• Current (In A)
• Capacitance (μF)
• Head (m.c.a. / m.w.c.) at various flow rates (L/min, m³/h)

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

Mechanical / Hydraulic

Overall dimensions (A, B, C, D, E, F in mm) and net weights (kg) are provided for DHR 2, DHR 4, and DHR 9 models.

• Suction port (DNA) sizes observed: 1”, 1” 1/4, 1” 1/2
• Discharge port (DNM) sizes observed: 1”, 1” 1/4

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

Disclaimer This summary is based on extracted text and may miss figures, footnotes, or revisions present in the complete OEM PDF. Contractual data must always match the official OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror