This float assembly is engineered specifically for Fleck 2300 series control valves and integrates with standard brine tanks requiring a 30-inch float rod. The assembly regulates water refill during regeneration cycles by mechanically shutting off flow when the preset water level is reached. Compatible with both residential and light commercial water softener installations using Fleck control valves. The white color designation matches standard Fleck brine tank hardware for consistent system aesthetics. When replacing an existing float assembly, verify your current rod length and valve model to ensure proper fitment and function.