Fleck 3900

Summary

Product Identification

• Model: 3900
• Type: 3" Control Valve

Features

• Fully adjustable, 5-cycle control delivers upflow backwash, downflow brining, slow rinse, rapid rinse, and downflow service.
• Designed for single tank or multi-tank systems, alternating or interlocking.
• Protective NEMA 3R enclosure is water-resistant, corrosion-resistant, and UV stable.
• Choice of 7 or 12 day clock or meter initiated regeneration.

Operating Limits

• Pressure:
  • Hydrostatic: 300 psi
  • Working: 20 - 125 psi
• Temperature: 34° - 110° F

Flow Rates (50 psi Inlet) - Valve Alone

• Continuous (15 psi drop): 250 GPM
• Peak (25 psi drop): 325 GPM
• Cv (flow at 1 psi drop): 65
• Max. backwash (25 psi drop): 100 GPM

Regeneration

• Cycles: 5
• Type: Downflow/Upflow
• Adjustable cycles: Yes
• Time available:
  • Electromechanical: 164 minutes
  • 3200NXT/3214NXT/XT: 240 minutes per cycle

Meter Information

• Meter accuracy: 7 - 300 GPM +/- 5%
• Meter capacity range (gal.):
  • Standard: 3,750 - 63,750
  • Extended: 18,750 - 318,750
  • 3200NXT/3214NXT/XT: 9,900,000

Mechanical / Hydraulic

• Valve material: Lead-free brass*
• Inlet/Outlet: 3" NPT
• Distributor pilot: 3" O.D.
• Drain line: 2" NPTF
• Injector brine system: 1"
• Mounting base: Top: 6" - 8" threaded or flanged
• Height from top of tank: 15"

Electrical

• Rating: 24 v, 110 v, 200 v - 50 Hz, 60 Hz

Additional Information

• Estimated shipping weight:
  • Time clock: 93 lbs.
  • Metered valve: 115 lbs.
• *As defined in the U.S. EPA Safe Drinking Water Act; the product also meets California Proposition 65 Standards.
• Tested and Certified by the WQA to NSF/ANSI Std. 61 Section 8 Material Safety Only and Annex "G".

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