Fleck 2850 S

Summary

Product identification

• Model: 2850s
• Type: 1.5" Control Valve
• Part No.: 42366 Rev D

Features

• 1.5" commercial valve with best-in-class flow rates
• Multi-tank system capability
• Increased service and backwash flow
• Fully adjustable 5-cycle control:
  • Controlled upflow backwash
  • Downflow brining and slow rinse
  • Rapid rinse
  • Timed brine refill
  • Downflow service
• Time-tested, hydraulically-balanced piston, seal and spacer design
• Solid lead-free brass* valve body
• 1.5" top mount control valve for smaller commercial/industrial applications
• Backwash capacity suitable for up to 36" diameter tanks (softeners)
• Suitable for filter applications up to 30" diameter tanks
• Consistent brining with timed brine refills
• Choice of 7- or 12-day clock, manual or volume initiated timers

Options

• Meter-initiated regeneration
• Time Clock
• No untreated water bypass piston
• Environmental cover
• Control types: Electromechanical, SXT, or NXT
• Hot water operation (time clock up to 180°F; metered valve up to 150°F)
• Manual operation
• Service valve operator
• Auxiliary micro switch
• Side mount configuration
• Cold water operation (up to 100°F)

Valve Specifications

• Valve material: Lead-free brass*
• Inlet/Outlet: 1-1/2" NPTF
• Cycles: 5
• Flow Rates (50 psi Inlet) - Valve Alone:
  • Continuous (15 psi drop): 70 GPM (side mount/top mount)
  • Peak (25 psi drop): 90 GPM (side mount/top mount)
  • Max. backwash (25 psi drop): 70 GPM
• Cv (flow at 1 psi drop): 18
• Regeneration Type: Downflow/Upflow or Downflow only
• Adjustable cycles: Yes
• Time available per cycle:
  • Electromechanical: 164 minutes
  • SXT: 0 - 199 minutes
  • NXT: 0 - 12 hours
  • XT: 0 - 12 hours

Meter Information

• Meter accuracy:
  • 7/10 - 40 GPM: +/- 5% (1" meter)
  • 1-1/2 - 75 GPM: +/- 5% (1-1/2" meter)
• Meter capacity range (gallons):
  • 1" Standard: 310 - 5,270
  • 1" Extended: 1,150 - 26,350
  • 1-1/2" Standard: 625 - 10,625
  • 1-1/2" Extended: 3,125 - 53,125
  • NXT, XT: 1,000 - 9,900,000
  • SXT: 1,000 - 60,000

Mechanical / Hydraulic

• Distributor pilot: 1-9/10" O.D.
• Drain line: 1-1/4" NPTF
• Injector brine system:
  • 1600 & 1650: 3/8"
  • 1710: 1/2"
• Brine line: 3/8" & 1/2"
• Mounting base: 4" - 8 UN
• Height from top of tank: 6-1/2"

Electrical

• Rating: 24 V, 110 V, 220 V - 50 Hz, 60 Hz
• Max. VA: 72

Operating Limits

• Pressure:
  • Hydrostatic: 300 psi
  • Working: 20 - 125 psi
• Temperature:
  • Cold water: 34° - 110° F
  • Hot water: Up to 180° F

Typical Applications

• Water Softener: 14" - 36" diameter tanks
• Iron Filter: 14" - 30" diameter tanks
• Sediment Filter: 14" - 30" diameter tanks
• Carbon Filter: 14" - 30" diameter tanks
• Neutralizing Filter: 14" - 30" diameter tanks

* As defined in the U.S. EPA Safe Drinking Water Act; the product also meets California Proposition 65 Standards.

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