Pedrollo 4HR

Summary

Product Identification

The Pedrollo 4HR series consists of 4" submersible pumps, constructed from micro-cast stainless steel.

• Registered Community Model No.: 004128619-0001

Performance Range

• Flow rate: Up to 420 l/min (25.2 m³/h)
• Head: Up to 176 m

Operating Limits

• Liquid temperature: Up to +40 °C
• Sand content: Max. 100 g/m³
• Maximum operating depth below water level:
  • 200 m with 4PD motors
  • 300 m with 4PS motors
• Operation:
  • In vertical position
  • Horizontally up to 12 stages
• Starts per hour: 20 at regular intervals
• Minimum motor cooling flow: 8 cm/s
• Duty: Continuous running duty S1

Feed Water

These pumps are designed to transfer clean or brackish water. They feature high mechanical resistance against both sand abrasion and corrosion, suitable for marine environments or brackish water installations.

Electrical

• Standard Voltage/Frequency (50 Hz):
  • Single-phase 230 V
  • Three-phase 400 V
• Motor Types:
  • 4PD: Rewindable and oil-filled
  • 4PS: Encapsulated and water-filled
• Power Cable Length:
  • 2 m for power ratings from 0.37 to 2.2 kW
  • 3.6 m for power ratings from 3 to 7.5 kW
• Available Upon Request: Different voltage requirements, 60 Hz frequency.

Mechanical / Hydraulic

The pumps are designed for 4" wells and are constructed with durable micro-cast stainless steel.

Materials and Components:

• Delivery port: Micro-cast AISI 304 stainless steel with thread according to ISO 228/1
• Check valve: Stainless steel AISI 304
• Motor bracket: AISI 304 micro-cast stainless steel, sized to NEMA standards
• Impellers: AISI 304 micro-cast stainless steel
• Diffusers: AISI 304 micro-cast stainless steel
• Pump shaft: Stainless steel AISI 304
• Pump bearings: Special elastomer
• Wear rings: Special elastomer
• Tow coupling: Stainless steel AISI 304
• Filter: Stainless steel AISI 304
• Cable sheath: Stainless steel AISI 304
• Motor 4": 4PD (rewindable oil filled) or 4PS (encapsulated water filled)

Dimensions and Weight: Dimensions (h1, h2, h3) and weights vary significantly by model (single-phase/three-phase, motor type, and specific 4HR variant). 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 original OEM PDF. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror