BS 2740.390 (SS)

Summary

Product identification

• Model: Flygt BS 2740
• Type: Corrosion resistant drainage pump
• Product code: 2740.390
• Installation: S
• Description: Optimised for extreme environments and unpredictable pH variance, made of stainless steel.

Operating limits

• Liquid temperature: max +40 °C
• Depth of immersion: max 20 m
• Liquid density: max 1100 kg/m³
• pH of pumped liquid: pH 2–10
• Voltage variation:
  • Continuously running: max ± 5%
  • Intermittent running: max ± 10%
• Voltage imbalance between phases: max 2%
• Number of starts/hour: max 15
• Thermal contacts opening temperature: +130 °C

Feed water

• Liquid temperature: max +40 °C
• Liquid density: max 1100 kg/m³
• Strainer hole size: 25 mm × 7 mm
• pH range: pH 2–10

Electrical

• Frequency: 50 Hz
• Insulation class: F (+155 °C)
• Rated output: 6.3 kW
• Speed of rotation: 2 840 rpm
• Voltage and Current Ratings (3~):
  • 230 D: Rated current 21 A, Starting current 157 A
  • 380 Y: Rated current 12 A, Starting current 72 A
  • 400 Y: Rated current 12 A, Starting current 77 A
  • 415 Y: Rated current 12 A, Starting current 80 A
  • 500 D: Rated current 9.4 A, Starting current 51 A
  • 550 D: Rated current 8.7 A, Starting current 57 A
• Cables (SUBCAB®): 4G2.5+2×1.5, 4G4+2×1.5, 7G2,5+2x1,5

Mechanical / hydraulic

• Discharge connection: 4" (MT), 3" (HT)
• Impeller characteristics: MT, HT
• Materials:
  • Impeller: Stainless steel
  • Wear parts: Nitrile rubber
  • Stator housing: Stainless steel
  • Strainer: Stainless steel
  • Shaft: Stainless steel
  • O-rings: Fluorinated rubber
  • Mechanical face seals:
    • Inner: Carbon/Silicon carbide
    • Outer: Silicon carbide/Silicon carbide
• Surface treatment: No surface treatment
• Weight (excl. cable): 75 kg
• Height: 730 mm
• Width: 280 mm

Features

• Corrosion resistant drainage pump, optimised for tough applications and unpredictable pH variance.
• Uniform design facilitates easy service and reduces inventory.
• Slim profile fits easily into confined spaces.
• Turnable outlet.
• Ring-shaped handle for good manoeuvrability and serves as a sturdy stand for service.
• Removable junction box cover for easy access to electrical components.
• Corrosion and impact resistant outer casing.
• Double mechanical shaft seal (same seal fits all pumps in the range, double protection, easy to service).
• Specially designed stainless steel impeller (corrosion and wear resistant).
• Adjustable diffusers for optimum performance.

Options and Accessories

• Options: Starters
• Accessories: Adapters, hose connections, other mechanical accessories, electrical accessories (pump controller, control panels, monitoring relays, cables).

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

Official datasheet (PDF)

Lenntech datasheet mirror