Descripción
Nelsen WS3 DLFC Assembly with NPT connection is the drain-line flow control group that meters backwash and rinse flow on 3-inch WS3 commercial control valves.
- Drain Line Flow Control (DLFC) assembly for the Nelsen WS3 3" valve platform
- NPT (National Pipe Thread) drain outlet for threaded pipe or fitting connection
- Holds backwash flow to a fixed rate so the media bed lifts and rinses correctly
- Part of the valve's drain circuit during regeneration and backwash cycles
- Shipping weight roughly 2.8 kg, reflecting the larger commercial-scale body
- Genuine Nelsen replacement part matched to the WS3 valve series
Use this assembly when servicing a large-diameter WS3 system and the existing drain-line flow control is worn, cracked, or fouled, or when converting the drain to an NPT-threaded connection. Correct DLFC sizing is what keeps a commercial media bed backwashing at the flow it was designed for, so match the assembly to your original valve build before installing.
Overview
- 🇺🇸 U.S.-based support and expert assistance
- 🔧 Built with trusted, industry-standard components
- 🚚 Ships nationwide - freight-safe packaging
- 🏠 Ideal for residential and light-commercial systems
Specs (Typical)
| Max Operating Pressure | 125 psi |
|---|---|
| Max Water Temp | 100 °F |
| Electrical | 120 V AC |
| Flow Range | 5-45 GPM (model dependent) |
Related: Control Valves . Parts . Get sizing help

