Autotrol External DLFC 5 gpm

The Autotrol External DLFC 5 gpm from Pentair is a drain line flow control that regulates exactly how fast water leaves your softener or filter during the backwash and rinse phases of regeneration. Mounting externally in the drain line rather than inside the valve body, it establishes a fixed 5 gallons-per-minute rate so the media bed lifts and cleans the way the manufacturer intended, without wasting water or leaving the resin under-rinsed.

Drain line flow controls are one of the most influential small parts in any regeneration system, even though they rarely get attention. Set the flow too low and the bed never fully fluidizes, leading to channeling, packing, and lost capacity. Set it too high and you risk lifting media right out to the drain. A factory-rated DLFC removes that guesswork by holding a steady, repeatable flow regardless of normal household pressure swings, which protects your resin investment and keeps regeneration consistent cycle after cycle.

Specifications

• Brand: Pentair Autotrol
• Service assembly type: DLFC (Drain Line Flow Control)
• Compatible valve model: 268
• Rated flow: 5 gallons per minute
• Mounting: external, drain-line installation
• Item weight: 0.07 lbs

This is a genuine Autotrol-style replacement well suited to installers and homeowners servicing an existing system or fine-tuning backwash performance. If you have noticed weak rinse cycles, hard water breakthrough shortly after regeneration, or media showing up at the drain, verifying that the correct DLFC rating is installed is a smart and inexpensive first step. The external design also makes inspection and cleaning easier than internal controls, since you can access it without fully disassembling the valve.

Because flow controls can slowly clog with sediment or scale over time, keeping a spare on hand makes routine maintenance and troubleshooting fast and predictable. Matching the right gpm rating to your tank diameter and media type is the key to dependable, efficient operation, and this 5 gpm unit is a common, proven choice for many residential and light-commercial Autotrol valve setups. When in doubt, your system documentation or media manufacturer can confirm the recommended backwash rate for your tank, and the 5 gpm value should be cross-checked against that figure before installation. With the correct DLFC in place, your water treatment equipment stays efficient and reliable season after season, fluidizing the bed thoroughly during each backwash and rinsing cleanly so the resin or filter media performs to its full capacity between regenerations.