The Fleck 2510 SXT High Performance Control Valve is Ideal for Light Commercial and Residential applications. 3/4" Control valve fiber-reinforced polymer valve body for superior strength and durability, non-corrosive, and UV-resistant. Features Large LCD display and user-selectable time clock or metered function; usable for filtration and softener systems Fiber-reinforced polymer or stainless steel bypass valve Filter or softener control valves Continuous service flow rate of 19 GPM with a backwash of 17 GPM Backwash capability accommodates softener tanks up to 16" and filters up to 16" in diameter Time-tested, hydraulically-balanced piston for service and regeneration Rugged-built electromechanical timer designed with heavy duty 3/8" wide plastic gears Electromechanical 7- or 12-day time clock, meter delayed, or meter immediate regeneration Fully adjustable 3- or 5-cycle control for efficient and reliable water treatment system operation Owner Manual Service Manual Spec Sheet