C

Summary

Product identification

These are close-coupled centrifugal pumps with an open impeller, designed for various industrial and agricultural applications. A free-flow (vortex or recessed) impeller is used for the C 16/1E type.

Two main versions are available:

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

Operating limits

• Liquid temperature: from -10 °C to +90 °C
• Ambient temperature: up to 40 °C
• Total suction lift: up to 8 m
• Maximum permissible working pressure: 6 bar
• Maximum size of solids: 4 mm
• Kinematic viscosity: max 20 mm²/sec
• Duty: Continuous

Feed water

• Suitable for moderately dirty liquids or emulsions.
• Density: 1000 kg/m³
• Maximum solid size: 4 mm

Electrical

• Motor type: 2-pole induction motor, 50 Hz (n ≈ 2900 rpm)
• Voltage options:
  • C (three-phase): 230/400 V ± 10%
  • CM (single-phase): 230 V ± 10%, with thermal protector
• Capacitor: Inside the terminal box (for single-phase models)
• Insulation class: F
• Protection: IP 54
• Frequency converter compatibility: Motor suitable for operation with frequency converter from 1.1 kW.
• Efficiency: Classification scheme IE3 for three-phase motors from 0.75 kW.
• Standards: Constructed in accordance with EN 60034-1; EN 60034-30-1; EN 60335-1, EN 60335-2-41.
• Special features on request: Other voltages, 60 Hz frequency, IP 55 protection, and motor suitability for frequency converters up to 0.75 kW.

Mechanical / hydraulic

• Construction: Close-coupled centrifugal pumps with open impeller.
• Materials:
  • Pump casing:
    • C version: Cast iron GJL 200 EN 1561
    • B-C version: Bronze G-Cu Sn 10 EN 1982
  • Lantern bracket:
    • C version: Cast iron GJL 200 EN 1561
    • B-C version: Bronze G-Cu Sn 10 EN 1982
  • Impeller: Brass P-Cu Zn 40 Pb 2 UNI 5705
  • Shaft:
    • Chrome steel 1.4104 EN 10088 (AISI 430)
    • Cr-Ni-Mo steel 1.4401 EN 10088 (AISI 316) for C 41
    • Chrome-nickel steel 1.4305 EN 10088 (AISI 303)
  • Mechanical seal: Carbon - Ceramic - NBR
• Connections: G 1/2, G 1, G 1 1/2 (ISO 228)
• Performance Data: Performance charts, coverage charts, and detailed performance tables (Total head H, Maximum power input P1, Rated motor power output P2, Flow rate Q) are available for various models. See the official PDF for exact tabulated values and performance curves.
• Dimensions and Weights: Detailed dimensions (mm) and weights (kg) are provided for specific models. 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 complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror