A

Summary

Product Identification

These are Self-Priming Centrifugal Pumps with an open impeller.

Two main versions are available:

• A version: Pump casing and lantern bracket in cast iron.
• B-A version: Pump casing and lantern bracket in bronze (supplied fully painted).

Models include A 40, A 50, A 65, and A 80 series.

Operating Limits

• Liquid temperature: From -10 °C to +90 °C
• Room temperature: Up to 40 °C
• Maximum permissible working pressure: Up to 6 bar (10 bar for A 80-170 models)
• Duty: Continuous duty

Feed Water

Suitable for clean or slightly dirty water.

• Solids grain size: Up to 10 mm for A 40 and A 50 models.
• Solids grain size: Up to 15 mm for A 65 and A 80 models.

Electrical

• Motor type: 2-pole induction motor, 50 Hz (n ≈ 2900 rpm)
• Three-phase motors:
  • 230/400 V ± 10% up to 3 kW
  • 400/690 V ± 10% from 4 to 7,5 kW
  • Classification scheme IE3 from 0,75 kW
• Single-phase motors (AM models):
  • 230 V ± 10%, with thermal protector
  • Capacitor inside the terminal box
• Insulation class: F
• Protection: IP 54
• Construction standards: EN 60034-1; EN 60034-30-1; EN 60335-1, EN 60335-2-41

Special features on request:

• Other voltages
• Frequency 60 Hz (as per 60 Hz data sheet)
• Protection IP 55

Mechanical / Hydraulic

• Construction: Close-coupled centrifugal pumps with open impeller.
• Self-priming: Features a built-in backflow preventer to avoid reverse siphoning and ensure automatic re-priming even if partially filled with liquid and with a completely empty suction pipe.
• Materials:
  • Pump casing, Suction flange, Inspection cover, Lantern bracket:
    • A version: Cast iron GJL 200 EN 1561
    • B-A version: Bronze G-Cu Sn 10 EN 1982
  • Impeller: Cast iron (for A 65, A 80 models). Material for other models not clearly specified in the extract.
  • Shaft:
    • Chrome-nickel steel 1.4305 EN 10088 (AISI 303)
    • Cr-Ni-Mo steel 1.4401 EN 10088 (AISI 316) for A 40/110, A 65-150A,B models
    • Chrome steel 1.4104 EN 10088 (AISI 430)
  • Mechanical seal: Carbon - Ceramic - NBR

Performance Data: Performance curves, detailed performance tables (H, Q, P1, P2, current), self-priming capability charts (suction lift, pipe length, priming time), and efficiency curves are provided in the official PDF for specific models. See the official PDF for exact tabulated values.

Dimensions and Weights: Detailed dimensions and weights (in kg) are available per model in the official PDF. See the official PDF for exact tabulated values.

Special features on request:

• Higher or lower liquid or ambient temperatures
• Special mechanical seal
• Construction with bearing bracket

---

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

Official datasheet (PDF)

Lenntech datasheet mirror