Watts Pressure Reducing and Sustaining with Downstream Surge Control S115-43,S1115-43

The WATTS ACV Pressure Reducing and Sustaining Control Valve with Downstream Surge Control Feature is designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates, sustain a minimum upstream pressure, and quickly modulate toward a closed position when a sudden high pressure downstream condition occurs. The quick closing action of the valve prevents possible damaging high inlet pressure from passing through the valve to downstream piping.