Pedrollo WR In-line

Summary

Product identification

Pedrollo WR IN-LINE close-coupled centrifugal pumps are designed for transferring clean water.

• Model Series: WR (three-phase), WRm (single-phase)
• Frequency: 50 Hz

Applications

Suitable for civil, industrial, and agricultural applications, including:

• Heating systems
• Air conditioning systems
• Cooling systems
• Circulation systems

Operating limits

• Manometric suction head: Up to 7 m
• Liquid temperature: Between -10 °C and +110 °C
• Ambient temperature: Between -10 °C and +40 °C
• Maximum pressure in pump body: 10 bar (PN10)
• Duty: Continuous running duty S1

Feed water

Designed to transfer clean water free from abrasive particles and liquids that will not damage the pump’s components.

Performance

• Flow rate: Up to 700 l/min (42 m³/h)
• Head: Up to 26 m
• Performance curves comply with EN ISO 9906 Grade 3B tolerance limits (HS=0 m, n = 2900 min⁻¹).

For detailed performance data (flow rate, head, power) for specific models (e.g., WRm 40/125-SB, WR 50/125A), see the official PDF for exact tabulated values.

Electrical

• Motor Type: Close-coupled electric motor
  • Three-phase pumps are equipped with motors designed to work with inverters.
  • Single-phase models (WRm): 230 V - 50 Hz, with capacitor and winding integrated thermal motor protection.
  • Three-phase models (WR): 230/400 V - 50 Hz.
• Efficiency Class:
  • IE3 for three-phase motors
  • IE2 for single-phase motors
• Insulation Class: F
• Protection Class: IPX4
• Duty: Continuous running duty S1

For specific current absorption values (A) for single-phase (230 V) and three-phase (230 V, 400 V) models, see the official PDF for exact tabulated values.

Mechanical / hydraulic

• Design: Close-coupled centrifugal pump with impeller directly mounted on the motor shaft.
• Pump Body: Provided with flanged suction and discharge ports of identical diameter.
• Materials:
  • Pump body: Cast iron with cataphoresis treatment
  • Cover: Cast iron with cataphoresis treatment
  • Impeller: Stainless steel AISI 304
  • Shaft: Stainless steel AISI 431
  • Mechanical seal: Graphite / Ceramic / EPDM (specific to shaft diameter: Ø 14 mm for WR 40/125-S, WR 50/125-S; Ø 20 mm for WR 50/125)
• Ports: DN 40, DN 50

For detailed dimensions (a, b, h, h1, h2, w, t) and weight (kg) for specific models, see the official PDF for exact tabulated values.

Available upon request

• Counterflange KIT including screws, nuts and gaskets
• Mechanical seal options
• Different voltage requirements (60 Hz frequency)

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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