Watts 8583-12|WW8583-12 - ACV PRV W/LOW FLOW 115-74 4" 150# FLGD

This 4 IN, class 150, Watts pressure reducing control valve with low flow by-pass, model 115-74, is designed to automatically reduce a fluctuating higher inlet pressure to a constant lower downstream pressure regardless of varying flow rates. A Flow rate below the normal range of the main line pressure reducing control valve is handled by a separate, valve mounted, direct acting low flow by-pass pressure reducing valve.