Flow Control Valves: Waterworks

Waterworks Flow Control Valves

Spec & Tech Sheets       

Model # 40-01 / 640-01

Benefits & Features

The Cla-Val Model 40-01/640-01 Rate of Flow Control Valve prevents excessive flow by limiting flow to a preselected maximum rate, regardless of changing line pressure. It is a hydraulically operated, pilot controlled, diaphragm valve. The pilot control responds to the differential pressure produced across an orifice plate installed downstream of the valve.

Model # 40-25 / 640-25

Benefits & Features

The Cla-Val Model 40-25/640-25 Rate of Flow and Pressure Sustaining Valve automatically limits the maximum flow rate, regardless of changing line pressure or demand. It also sustains the upstream pressure to a pre-determined minimum.

Install this valve where the water supply to a system must be limited to a preset flow to prevent lowering the supply pressure. 

Model # 43-01 / 643-01

Benefits & Features

The Model 43-01/643-01 includes an orifice plate with a holder that should be installed one to five pipe diameters downstream of the main valve. If the check feature option is added and a pressure reversal occurs, the downstream pressure is admitted into the main valve cover chamber and the valve closes to prevent return flow.

Model # 49-01 / 649-01

Benefits & Features

This valve is a hydraulically operated, pilot controlled diaphragm valve. The pilot system includes 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.

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Model # X52E

Benefits & Features

The Cla-Val Model X52E Orifice Plate Assembly is typically used with Cla-Val flow control valves. The orifice plate is an essential component used to generate a specific, predictable pressure drop in the system. The X52E uses a wafer design holder which offers a compact lightweight assembly that is easy to install.