Slotted flow collector/distributor for water treatment tank with one-way valves

摘要: A flow collector/distributor for a water treatment tank comprises housing proportioned to communicate through wall of the provide communication between interior and exterior. The defines an inner end project inwardly from outward face outwardly wall. plurality slots are defined in tubular housing, positioned with when is seated width which narrow enough permit therethrough while substantially preventing passage material present within tank. One or more one-way valves provided all exterior, but prevent some, not all, exterior interior. Also, novel slot design disclosed having improved characteristics.