Cla-Val Pacific 49-01 and 649-01 Rate of Flow and Pressure Reducing Valves automatically reduce a higher inlet pressure to a steady lower downstream pressure regardless of changing flow rate and/or varying inlet pressure, as long as the flow rate is below a preset maximum. They also prevents excessive flow by limiting flow to a preselected maximum rate using a direct acting pressure reducing pilot and a rate of flow differential control. The pressure reducing pilot is responsive to slight variations in downstream pressure and immediately controls the main valve to maintain the desired line pressure.
