Pedrollo 6SR

Summary

Product Identification

The Pedrollo 6SR series consists of 6" submersible pumps designed for 50 Hz operation. These pumps are engineered with special materials to resist sand abrasion for long-lasting performance.

Performance Range

• Flow rate: up to 1000 l/min (60 m³/h)
• Head: up to 390 m

Installation and Use

These pumps are designed to transfer clean water with a sand content up to 100 g/m³. They are highly efficient and reliable, suitable for industrial, civil, and agricultural applications such as:

• Water distribution coupled with pressure tanks
• Irrigation
• Pressure boosting
• Fire-fighting systems

Operating Limits

• Liquid temperature: up to +35 °C
• Maximum sand content: 100 g/m³
• Maximum operating depth below water level:
  • 200 m with 6PD motors
  • 150 m with 6PSR motors
• Operation:
  • In vertical position
  • Horizontally with limits: up to 12 stages or up to 11 kW
• Starts per hour: 20 at regular intervals
• Minimum cooling flow: 8 cm/s
• Continuous running duty: S1
• Suitable for wells with a minimum diameter of 6" (153 mm).
• The pump must be lowered to a depth that ensures it remains fully submerged, maintaining at least 50 cm or one metre from the bottom of the well, even if liquid levels decrease during operation.
• When installed in reservoirs, rivers, or lakes, an external cooling jacket (flow generator) is required to ensure sufficient water flow across the motor surface and prevent overheating.

Feed Water

• Clean water
• Maximum sand content: 100 g/m³

Electrical

• Standard: Three-phase electric motor 400 V - 50 Hz
• Motor Types:
  • 6PD: Rewindable and oil-filled motor
  • 6PSR: Rewindable and water-filled motor
• Included: 4 m power cable
• Available Upon Request:
  • 6SR-HYD pumps with double cable cover for coupling with 400/690 V s/t dual voltage motors (star/delta)
  • Other voltages

Mechanical / Hydraulic

• Delivery Port Nominal Diameter (DN): 3"

• Materials and Components:

  • Delivery port: Cast iron with cataphoresis treatment with thread according to ISO 228/1
  • Check valve: Stainless steel AISI 304
  • Motor bracket: Cast iron with cataphoresis treatment sized to NEMA standards
  • External sleeve: AISI 304 stainless steel
  • Impellers: Noryl™ and coated with special sand-resistant elastomer
  • Diffusers: Noryl™
  • Diffuser boxes: AISI 304 stainless steel
  • Pump shaft: AISI 304 stainless steel
  • Pump bearings: Made of AISI 316L stainless steel coated with chromium oxide to resist sand
  • Tow coupling: AISI 420 stainless steel
  • Filter: AISI 304 stainless steel
  • Cable sheath: AISI 304 stainless steel
  • Motor 6": 6PD (rewindable oil filled motor) or 6PSR (rewindable water filled motor)

• Performance Data: Performance curves comply with EN ISO 9906 Grade 3B tolerance limits. See the official PDF for exact tabulated values of flow rate (Q) and total manometric head (H) for specific models and power ratings.

• Dimensions and Weight: See the official PDF for exact tabulated dimensions (h1, h2, h3) and weights (kg) for all 6SR models with both 6PD and 6PSR motor configurations.

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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 datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror