Fleck 2850

Summary

Product identification

• Product Line: Pentair Control Valves
• Model: Fleck 2850 Industrial Valve

Operating specifications

• Material: Brass
• Hydrostatic pressure: 20 bar
• Working pressure: 1.8 - 8.5 bar
• Working temperature: 1 - 43 °C
• Regeneration types: Manual, Timeclock (7 or 12 days), Meter (delayed or immediate), Electronic timer
• Cv (Flow rate alone at 0.07 bar): 13.2 gpm

Flow rates (valve alone)

• Continuous (Δp = 1 bar): 11.6 m³/h
• Peak (Δp = 1.8 bar): 15 m³/h
• Maximum backwash (Δp = 1.8 bar): 11.1 m³/h

Electrical

• Rating: 24 V - 50 Hz (other upon request)
• Protection index: IP 44

Mechanical / hydraulic

• Inlet / outlet: 1 ½ inch BSP
• Distributor tube: 50 mm (DN 40)
• Drain line: 1 inch NPT
• Brine line (1650): ⅜ inch
• Brine line (1710): ½ inch
• Mounting base - Top: 4 inches - 8 UN
• Height (from the top of tank): 165 mm
• Recommended tank size:
  • Water softener: 10 - 30 inches (250 - 760 mm)
  • Filters: 10 - 24 inches (250 - 610 mm)

Meter specifications

• Accuracy range (± 5%): 5 - 283 Lpm
• Standard capacity range: 2.5 - 40 m³
• Extended capacity range: 12 - 200 m³

Regeneration cycles (Down flow)

1. Backwash
2. Brine & slow rinse
3. Rapid rinse
4. Brine tank refill
5. Service

Options

• Mounting: Side Mount adapter
• Filter Hot Water Temperature: 65°C (meter) / 82°C (timeclock)

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

Official datasheet (PDF)

Lenntech datasheet mirror