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Regulating valves are classified on the basis of their nominal capacity as medium-flow, small-flow, and microflow valves and on the basis of nominal pressure as low-pressure, medium-pressure, and high-pressure valves. Pressure regulating valve working at temperatures between -225° and 450°C. Adjusting valves are many different types of regulating valves, including single- and double-seat, pass, angled, and three-way valves. Double-seat valves with spring-loaded diaphragms as actuating mechanisms are most commonly found.
The pressure regulating valve drives the valve to change the cross-sectional area between the valve core and the valve seat by receiving the signal from the industrial automation control system, and controls the flow, temperature, pressure and other process parameters of the pipeline medium, and realizes the automatic adjustment function. Because the self-operated pressure regulating valve does not require other external energy sources such as power supply and air source, it is driven only by the energy of the medium itself, which is energy-saving and environmentally friendly, and is easy to use. After installation, the pressure value can be set and it can be put into automatic operation. It is more and more widely used in occasions where the control accuracy is not high and the power supply and air source are lacking. But in the process of use, we must pay attention to the particularity of the selection, otherwise it is easy to cause accidents. In the process of use, attention should be paid to the selection of use and installation environment. Therefore, it is very important to understand the working principle and structure of the self-operated pressure regulating valve in detail.
Self-operated pressure regulating valve is an energy-saving product that does not require external energy and only relies on the pressure change of the regulating medium to automatically adjust the pressure. It has comprehensive functions of measurement, execution and control. It is widely used in petroleum, chemical, metallurgy, light industry and other industrial sectors as well as urban heating and heating systems. This product can be used in pressure control devices for non-corrosive media such as liquid, gas and steam with a maximum temperature of 350°C.
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