Self-operated pressure regulating valves require no external power or air supply. They directly use parameters of the controlled medium such as pressure and temperature as the driving force. Feedback signals are transmitted to the actuator through signal pipes, which drives the valve disc to change the valve opening, so as to automatically adjust pressure, flow and temperature.
Working Principle
Self-operated pressure regulating valves take parameters of the controlled medium including pressure and temperature as the power source. Feedback signals are sent to the actuator via signal pipes. The actuator adjusts the position of the valve core according to the feedback signals, changing the valve opening and the flow area of the medium, thus achieving automatic regulation of pressure, flow and temperature.
Structure
Self-operated pressure regulating valves mainly consist of a valve body, valve core, spring and actuator. The valve body is structured to ensure smooth medium flow; the position of the valve core determines the medium flow area, thereby controlling flow and pressure; the spring resets the valve core to ensure stable operation; the actuator controls the displacement of the valve core to realize pressure reducing and stabilizing or pressure relief and stabilizing functions.
Applications
Self-operated pressure regulating valves are widely used in various industrial pipeline systems for automatic regulation and control of pressure, flow and temperature. Since they require no external energy and only operate on the energy of the medium itself, they feature high reliability and stable performance.
