Nocchi Dominator 4

Summary

Product identification

The Nocchi DOMINATOR 4” is an electric submersible multi-stage centrifugal pump designed for fresh water, with a Ø 4” diameter. It features a hydraulic system particularly resistant to sand corrosion, an incorporated check valve, and an incorporated capacitor. The pump is supplied ready to use and install, including a 20 m nylon suspension cord.

Applications

• Lifting from traditional wells.
• Installations in tanks in the home for pressurization of domestic drinking water systems.
• Small automatic garden irrigation systems.
• Gravity irrigation systems.

Operating limits

• Maximum liquid temperature: 40°C
• Maximum immersion below water level: 17 m
• Suitable for continuous duty

Feed water

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

Electrical

• Motor: Dry motor with stainless steel body, cooled by pumped liquid.
• Protection rating: IP 68
• Insulation class: F
• Power supply: Single phase with permanently activated capacitor.
• Protection: Thermal cutout protection incorporated in motor winding.
• Cable connection: Fully insulated chamber.
• Bearings: Self-lubricating ball bearings.
• Rotation speed: 2850 rpm
• Power cable: 20 m H07 RNF-F
• Voltage: 1 ~ 220 - 240 V (some models 1 ~ 230 - 240 V). See performance table for specific model voltages.

Mechanical / hydraulic

• Pump type: Submersible multi-stage centrifugal pump.
• Diameter: Ø 4”
• Check valve: Integrated plastic check valve.
• Discharge connection (DNM): 1”1/4 threaded insert.
• Free clearance: 2 mm

Materials of Construction

• Pump body: Stainless steel X5 CrNi 1810 (AISI 304)
• Suction grille: Stainless steel X 16 CrNi 16 (AISI 431)
• Base: Noryl GNF 2V
• Impellers: Acetal resin
• Diffusers: Polycarbonate with ceramic insert at point of wear
• Diffuser cap: Polycarbonate with stainless steel inserts at point of wear
• Motor shaft: Hexagonal in stainless steel X 10 CrNiS 1809 (AISI 303) with ceramic coating at point of wear + AISI 416 on shaft section packed in the rotor
• Mechanical gasket: Graphite
• Counterface: Aluminum oxide
• Head: Noryl with 1’ 1/4 threaded insert
• Thrust ring: Inserted in each stage

Performance Data

The document includes a hydraulic performance chart and a detailed performance table for various models, listing:

• Motor output (P2) in HP and kW
• Power (P1) in HP and kW
• Voltage (VOLT)
• Current (In) in A
• Capacitor (μF)
• Number of stages
• Flow rates (Q) in L/min and m³/h
• Head (m.c.a. / m.w.c.)

See the official PDF for exact tabulated values for each model (e.g., DOMINATOR 4” - 55/50 M, 75/35 M, 75/56 M, 75/75 M, 115/36 M, 115/57 M, 115/70 M).

Dimensions and Weights

• Overall Diameter (Ø C): 98 mm
• Discharge Nominal Measurement (DNM): 1”1/4
• Free clearance: 2 mm

Overall dimensions (A) and weights vary by model. See the official PDF for exact tabulated values.

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

Official datasheet (PDF)

Lenntech datasheet mirror