KDN

Summary

Product identification

The DAB KDN OVERSIZE series consists of standardised single-stage centrifugal pumps. They feature an axial suction port, radial discharge port, and horizontal shaft components.

These pumps are designed for applications including:

• Conditioning
• Irrigation
• Water transfer
• Pressurization
• Industrial applications

The KDN pumps' dimensions and nominal performances conform to EN 733 (10 bar), but they are designed for 16 bar operation where the shaft seal type permits. The pump and motor are mounted on a common, all-welded steel baseplate in accordance with EN 23 661; oversize models feature profile base frames. The back-pull-out design allows the complete bearing assembly, including impeller and shaft seal, to be dismantled without removing the pump body from the pipe system.

Operating limits

• Flow: Max. 2200 m³/h
• Head: Max. 158 m
• Liquid temperature: -25°C to +140°C
• Operating pressure: Max. 16 bar

Electrical

The pumps are equipped with asynchronous, closed motors with external ventilation, available in 2, 4, or 6 poles.

• Motor construction: B3
• Protection level: IP 55
• Insulation class: F
• Supply voltage:
  • Three-phase 230-400V 50 Hz up to 2.2 kW (inclusive)
  • 400V Δ 50 Hz over 2.2 kW
• Electrical protection: In compliance with EEC 89/336 ELECTROMAGNETIC COMPATIBILITY directive, EEC 73/23 LOW VOLTAGE directive, and CEI 2-3 standards.
• Special versions: Other voltages and/or frequencies are available on request.

Mechanical / hydraulic

• Flanges: Suction and discharge flanges are according to EN 7005 PN 10 or 16.
• Balancing: All pumps are dynamically balanced according to ISO 1940 class 6.3, and impellers are hydraulically balanced.
• Connections:
  • M1: Pressure gauge connection
  • S1: Drain plug
  • S3: Packing drain connection 1/2”
  • V1: Vacuum gauge connection
• Lubrication:
  • Grease lubrication: G1 Greaser
  • Oil lubrication: R1 Oil filling - 3/8”, L1 Oil level - 3/8”, S4 Oil drain plug - 3/8”, LC Constant level oil - 1/4”

Detailed dimensions and weights for various KDN models (e.g., KDN 32-250, KDN 150-500, KDN 350-500A) are provided in the official PDF, including parameters such as DNa, DNm, a, f, h1, h2, b, m1, m2, n1, n2, d2, n3, d3, w, x, d1, l, and Kg.

Performance curves illustrating Head (H) versus Flow (Q) for 2-pole, 4-pole, and 6-pole motors are available in the official PDF.

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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