Electronic Actuated Rate-of-Flow Pilot Control

The Cla-Val Model CDHS-34 Electronic Actuated Differential Pressure Pilot Control provides remote set-point adjustment and accurate differential pressure control for the rate of flow control on Cla-Val 340 Series Control Valves. Remote set-point command signals can be from any SCADA-type control system using analog 4-20 mA signal, by contact closure for cc/CCW rotation or through Modbus RTU. A precision orifice plate installed with a valve creates differential pressure used for the rate of flow control by the CDHS-34. Operating on 12 to 24 VDC and consuming very little power, it is an ideal control system for remote valve sites that may even be solar-powered.

The CDHS-34 Is installed on Cla-Val 340 Series valves to maintain flow rate and allow the flow rate to be changed from a remote location. It is also an effective solution for lowering costs associated with “confined space” requirements by eliminating the need for an entry in valve structure for set-point adjustment. Additional pilot controls, hydraulic and/or electronic, are also available to perform multiple functions to fit exact system requirements.