Fleck 3900

Summary

Product Identification

Fleck Industrial Valve 3900

Technical Characteristics

• Material: Brass
• Hydrostatic pressure: 20 bar
• Working pressure: 1.8 - 8.5 bar
• Working temperature: 1 - 43 °C
• Cv (Flow rate of valve alone in gpm at 0.07 bar pressure drop): 65 gpm
• Continuous flow rate (Δp = 1 bar): 57 m³/h
• Peak flow rate (Δp = 1.8 bar): 74 m³/h
• Maximum backwash flow rate (Δp = 1.8 bar): 24 m³/h

Electrical Rating

• Rating: 24 V - 50Hz
• Other ratings: Upon request
• Protection index: IP 44

Regeneration

• Type: Timeclock (7 or 12 days), Meter (delayed or immediate), Electronic timer
• Brining: Optional upflow brining
• Cycles: Adjustable (Mechanical and Electronic)
• Time available (Mechanical): 164 min
• Time available (Electronic): Up to 99 min each cycle
• Regeneration cycles (Down flow): Backwash, Brine & slow rinse, Rapid rinse, Brine tank refill, Service
• Regeneration cycles (Upflow): Backwash, Brine and slow rinse, Rapid rinse, Brine tank refill, Service

Meter Specifications

• Mechanical:
  • Accuracy range (± 5%): 26.67 - 1133 Lpm
  • Standard capacity range: 14 - 240 m³
  • Extended capacity range: 70 - 1200 m³
• Electronic: N/A for accuracy range, standard capacity range, and extended capacity range.

Mechanical / Hydraulic Connections

• Inlet / outlet: 3 inches BSP
• Distributor tube: 90 mm (DN 40)
• Riser tube cut: Target / Max / Min (Flush with top tank / 0.5 inch above tank / 0.75 inch below tank)
• Drain line: 2 inch BPS
• Brine line (1800): 1 inch NPT
• Mounting base: 6 inches - 8 thread UN
• Height (from the top of tank): 381 mm
• Recommended tank size application:
  • Water softener: 30 - 60 inches (760 - 1520 mm)
  • Filters: 24 - 42 inches (610 - 1070 mm)

Options

• Mounting: Side mount
• Regeneration: Upflow
• Control: Electronic

Disclaimer This extraction may miss figures, footnotes, or revisions from the original document. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror