The Fleck 9100 SXT is perfect is a Light Commercial & High Demand Residential twin tank system composed of a fiber–reinforced polymer valve body for superior strength and durability, non-corrosion and UV-resistance. Features Large LCD display and user-selectable time clock or metered function; usable for filtration and softener systems Fiber-reinforced polymer valve body for superior strength and durability, non-corrosive, and UV-resistant Continuous service flow rate of 20.1 GPM with a backwash of 8.5 GPM Backwash capability accommodates softener tanks up to 16" Fully adjustable 5-cycle control for efficient and reliable water treatment system Time-tested, hydraulically-balanced piston for service and regeneration Rugged-built electromechanical timer designed with heavy duty 3/8" wide plastic gears Salt and water savings by using 100% capacity of the tank in service before switching to the second tank Regenerates immediately when needed for continuous soft water Regenerates with soft water keeping system clean for optimum operating efficiency and minimum maintenance Service Manual Spec Sheet