Nocchi Dominator 4 plus

Summary

Product identification

The Nocchi Dominator 4 Plus is an electric submersible multi-stage centrifugal pump designed for fresh water applications, with a Ø 4” form factor.

Key features include a double mechanical seal, a hydraulic system particularly resistant to sand corrosion, and an integrated check valve. Each pump is supplied with a 20 m nylon suspension cord.

Typical applications include:

• Lifting from traditional wells
• Installations in tanks for pressurization systems
• Small automatic garden irrigation systems
• Gravity irrigation systems

Operating limits

• Liquid Type: Clean water without suspended solids or abrasive material
• Maximum Liquid Temperature: 40°C
• Maximum Immersion Depth: 17 m below water level
• Duty Cycle: Suitable for continuous duty

Feed water

• Type: Clean water without suspended solids or abrasive material.

Electrical

• Motor Type: Dry motor with stainless steel body, cooled by the pumped liquid.
• Protection Rating: IP 68
• Insulation Class: F
• Power Supply: Single phase with permanently activated capacitor.
• Protection: Thermal cutout incorporated in the motor winding.
• Cable Connection: Fully insulated cable connection chamber.
• Bearings: Self-lubricating ball bearings.
• Rotation Speed: 2850 rpm
• Power Cable: Type H07 RN-F, 20 m length.
• Voltage: 1 ~ 230 V (for all listed models).
• Current (In), Capacitor (μF), Motor Output (P2), and Power (P1): These values vary by model. See the official PDF for exact tabulated values.

Mechanical / Hydraulic

• Pump Diameter: Ø 4”
• Sealing: Double mechanical seal.
• Check Valve: Integrated.
• Outlet Connection (DNM): 1”1/4 (for all listed models).
• Free Clearance: 2 mm (for all listed models).
• Materials of Construction:
  • Check valve: Thermoplastic with NBR o-ring
  • Pump body: Stainless steel (Europe: EN10088-1 X 5 CrNi 1810 (1.4301) / USA: AISI 304)
  • Mechanical seal (stationary part oil chamber): Aluminium oxide / NBR
  • Mechanical seal (rotary part oil chamber): Stainless steel (Europe: EN10088-1 X 5 CrNi 1810 (1.4301) / USA: AISI 304) / NBR / Carbon graphite resin impregnated
  • Mechanical seal (stationary part): Aluminium oxide / NBR
  • Mechanical seal (rotary part): Stainless steel (Europe: EN10088-1 X 2 CrNiMo 17-12-2 (1.4404) / USA: AISI 316) / NBR / Carbon graphite
  • Motor shaft (Wet side): Stainless steel (Europe: EN10088-1 X 8 CrNiS 18-9 (1.4305) / USA: AISI 303)
  • Motor shaft (Motor side): Carbon steel
  • Diffuser cap: Polycarbonate with stainless steel wear insert (Europe: EN10088-1 X 5 CrNi 1810 (1.4301) / USA: AISI 304)
  • Diffuser: Polycarbonate with ceramic wear insert
  • Impeller: Acetal resin
  • Bushing: Stainless steel (Europe: EN10088-1 X 8 CrNiS 18-9 (1.4305) / USA: AISI 303) with ceramic coating
  • Bearing: Self lubricating Nylatron®
  • Suction filter: Stainless steel (Europe: EN10088-1 X 6 Cr 17 (1.4016) / USA: AISI 430)
  • Base: PPO - Noryl™ GFN 2
  • Other: Thrust ring inserted in each stage.
• Dimensions and Weights: These values vary by model. See the official PDF for exact tabulated values.

Performance Data

• Minimum Efficiency Index (MEI): ≥ 0.4
• MEI Reference: ≥ 0.70
• Hydraulic performance curves and detailed performance tables (flow rate Q in l/min or m³/h vs. head H in m.c.a. / m.w.c.) are available in the official PDF for various 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 official OEM PDF. Contractual data must always match the specific OEM PDF revision used for the project.

Official datasheet (PDF)

Lenntech datasheet mirror