Abundant Flow Water BWF-CC15-56SXT Catalytic Carbon Filter, Almond Backwashing catalytic carbon system for iron, hydrogen sulfide, chlorine, chloramines, chemicals Catalytic carbon provides high surface area for maximum treatment results System treats up to 3.0 GPM of CONTINUOUS flow at maximum contaminate levels* Fleck 5600SXT digital valve is a reliable, user-friendly valve with advanced digital control Complete with 5600SXT valve, 1.2 cu. ft. catalytic carbon, 10" resin tank, and 3/4" bypass valve