K Twin Impeller

Summary

Product identification

The DAB K Twin Impeller series consists of centrifugal pumps designed for pressurisation units in domestic, civil, and industrial water supply systems, as well as for sprinkling irrigation and other water supply applications.

Key construction materials include:

• Pump body and motor support: Cast iron
• Impeller: Technopolymer
• Driving shaft: Stainless steel
• Mechanical seal: Carbon/ceramic

The pumps feature an asynchronous, closed motor cooled by external ventilation. Single-phase versions include built-in thermal and current overload protection and a permanently on capacitor. For three-phase motors, suitable external overload protection is advised.

Some models (indicated by -P**) are equipped with a pressure gauge, pressure switch, power cable with plug, and a five-way fitting for tank connection.

Operating limits

• Operating range: 1.2 to 30 m³/h with head up to 97 metres.
• Liquid temperature range:
  • -10°C to +50°C: for K 35/40, K 45/50, K 35/100, K 40/100, K 55/100
  • -15°C to +110°C: for K 55/50, K 66/100, K 90/100, K 70/300, K 80/300, K 70/400, K 80/400
• Maximum operating pressure:
  • K 35/40, K 35/100, K 40/100: 6 bar (600 kPa)
  • K 45/50, K 55/50: 8 bar (800 kPa)
  • K 55/100, K 66/100: 10 bar (1000 kPa)
  • K 90/100, K 70/300, K 80/300, K 70/400, K 80/400: 12 bar (1200 kPa)
• Maximum ambient temperature: +40°C
• Protection level: IP 44
• Terminal board protection level: IP 55
• Insulation class: F

Feed water

The pumped liquid must be clean, free from solids or abrasive substances, not viscous, not aggressive, not crystallised, chemically neutral, and close to the characteristics of water.

Electrical

Electrical data varies by model and includes specifications for:

• Voltage (50 Hz)
• P1 Max (kW)
• P2 Nominal (kW)
• HP
• In (A)
• Capacitor (µF, Vc)

Models are available in single-phase (1 x 230 V~) and three-phase (3 x 230 - 400 V~ or 3 x 400 V~) configurations. Some models are noted as having a "NEW IE2 MOTOR" or "Star delta starting".

See the official PDF for exact tabulated values for each model.

Mechanical / hydraulic

Detailed dimensions (A, B, C, D, E, F, G, øi, H, H1, H2) and weights (KG) are provided for each model. Connection sizes (DNA, DNM) are specified, ranging from 1” G to 2” G.

See the official PDF for exact tabulated values for each model.

---

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

Official datasheet (PDF)

Lenntech datasheet mirror