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Summary

Product identification

• Product Type: Vertical-axis multi-stage centrifugal pumps (POMPES CENTRIFUGES MULTICELLULAIRES A AXE VERTICALE)
• Models: NKV 10, NKV 15, NKV 20
• Application: IN-LINE vertical multi-stage pumps designed for water boosting in domestic or industrial installations. Also suitable for pumping hot or cold water in large HVAC systems where a high head is required, and in fire-fighting installations (e.g., hose reels, hydrants).

Operating limits

• Operating Range: 4 to 29 m³/h with discharge head up to 249 m
• Liquid Temperature Range: -20°C to +90°C
• Maximum Ambient Temperature: +40°C
• Maximum Operating Pressure: 25 bar (2500 kPa)
• Installation: Fixed, in vertical position

Feed water

• Liquid Pumped: Clean, without solid bodies or mineral oil, non-viscous, chemically neutral, close to water characteristics.

Electrical

• Motor Type: Closed asynchronous motor, externally ventilated.
• Rotor: Mounted on self-lubricated bearings, selected for longevity and low noise.
• Motor Protection: For three-phase motors, it is advisable to use a remote circuit breaker in accordance with current standards.
• Standard Voltage:
  • 3 x 230-400 V up to 4 kW
  • 3 x 400 V ~ Δ from 4 kW
• Protection Rating: IP 55
• Insulation Class: F
• Compliance: CEI 2-3
• Options: EFF1, 60 Hz, Explosion-proof, PTC

Mechanical / hydraulic

• Materials in Contact with Water: All parts in contact with water are made of AISI 304 stainless steel. This includes impellers, motor casing, and suction/discharge connections.
• Support: Cast iron treated with a special cataphoresis coating.
• Mechanical Seal: Cartridge-type, silicon/silicon.

Technical Data Tables

The datasheet includes detailed tables for specific model variants (NKV 10/X T*, NKV 15/X T*, NKV 20/X T*), listing:

• Model Code
• Electrical Data (P2 Nominal in kW and HP, In in A)
• Hydraulic Data (Q in m³/h and l/min, H in m, DNA GAS, DNM GAS, H in mm, KG)

See the official PDF for exact tabulated values.

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 for the project.

Official datasheet (PDF)

Lenntech datasheet mirror