Filter Regulator Series AW-A allows users to easily replace the filter element as the element and bowl are in one piece only. The regulator used in this series is an energy saving regulator with a pressure drpo improvement of up to 50%. Some other features of AW-A Series Filter Regulators are:-   Reduced required maintenance space: Max. 46% reduction Better visibility & safer The bowl is covered with a transparent bowl guard. Attachment Spacer : Y200-A, Y300-A, Y400-A, Y500-A Spacer with bracket : Y200T-A, Y300T-A, Y400T-A,