OP

Summary

Product identification

The SAER OP series consists of multi-stage horizontal centrifugal electric pumps.

Models are available with power ratings from 0.37 to 13.5 kW.

Special versions include:

• OP32 i - OP40 i: Versions with an integrated inverter in the motor.
• OPX: Versions with AISI316 material construction.

Operating limits

• Temperature of pumped liquid: min 0°C – max 90°C
• Ambient temperature: max 40°C
• Maximum working pressure:
  • 13 bar (OP65: 16 bar) when the pumped liquid temperature is up to 45°C.
  • 6 bar when the pumped liquid temperature is from 45°C to 90°C.

Feed water

These pumps are designed for pumping clean water and other chemically non-aggressive liquids. Typical applications include domestic use, automated water distribution to small or medium-sized tanks, gardening, irrigation, and general water supply. Due to their high head capabilities, they can also be used as pilot pumps in pressure boosting systems.

Mechanical / hydraulic

• Pump type: Multi-stage horizontal monobloc centrifugal pump.
• Performance (50 Hz):
  • Maximum flow rate (Qmax): 40 m³/h
  • Maximum head (Hmax): 126 m
  • Head at zero flow (H (Q=0)): 132 m
• Performance (60 Hz):
  • Maximum flow rate (Qmax): 48 m³/h
  • Maximum head (Hmax): 120 m
  • Head at zero flow (H (Q=0)): 126 m
• Construction materials:
  • Discharge connection: Cast iron GJL250 (EN-GJL250)
  • Suction connection: Cast iron GJL250 (EN-GJL250)
  • Stage casing with diffuser:
    • OP32 - OP40: Pressed stainless steel.
    • OP50 - OP65: Stainless steel AISI304.
    • OPX versions: Precision cast stainless steel AISI 316.
  • Impeller:
    • OP32 - OP40: Pressed stainless steel.
    • OP50 - OP65: Stainless steel AISI304.
    • OPX versions: Precision cast stainless steel AISI 316.
  • Mechanical seal: Aluminum oxide-Graphite-EPDM
  • Rotor shaft: Stainless steel AISI 431 (single-piece, supported in three points).
• Design features:
  • Diffusers include self-centring wear rings.
  • Pump and motor are designed for easy disassembly and repair.
• Tolerances:
  • Pump: UNI EN ISO 9906 – Annex A

For detailed hydraulic characteristics (Q-H curves) and dimensional drawings for specific models (OP32/R, OP32, OP40/R, OP40, OP50, OP65, and their 60 Hz counterparts), please refer to the official PDF.

Electrical

• Motor insulation class: F
• Motor protection:
  • OP32: IP44 (IP55 on request)
  • OP40, OP50, OP65: IP55
• Three-phase versions:
  • 50 Hz: 380-400V
  • 60 Hz: 440-460V
• Single-phase versions:
  • 50 Hz: 220-230V
  • 60 Hz: 230V (with thermal protection on request)
• Special voltages: Available on request.
• Tolerances:
  • Motor: IEC 60034-1

---

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