Principal of Operation Dirty liquid enters the settling tank located below the weir sections. There, Tube-O-Matic’s tubular weir design restricts velocity to a minimum, eliminates currents and eddies, and permits more effective gravity separation. Contaminants sink to the bottom; the cleaned, clear liquid then rises slowly through the tubes under pressure from incoming fluid overflowing gently into a separate clean storage tank for recirculation in the system.  Tube-O-Matic’s patented tubular weir design permits maximum linear feet of weir in a minimum of floor space giving greater overall capacity. Next Page >