Fleck 5600 3 Cycle, Standard Filter 12 Day Timer Valve, #0 Injector, No DLFCFleck Timer Control Valve Fleck 5600 3 Cycle Standard Filter 12 Day Timer Valve Mechanical timer control for downflow regeneration systems with #0 injector configuration, no DLFC 12 Day Clock Timer Fiber Reinforced Polymer Body #0 Injector Included 20 GPM Continuous Flow The Fleck 5600 3 Cycle timer valve delivers reliable mechanical control for water softeners, iron filters, and sediment systems in residential and light commercial applications. Built