The electric control valve is a valve controlled by an electric actuator, which is mainly used to adjust the flow, pressure and temperature parameters of the medium to achieve automatic control. Its core function is to accurately respond to the control signal and adjust the valve opening, so as to control the medium mass passing through the valve and ensure that the system parameters are stable at the set value.
In terms of working principle, the electric control valve usually receives standard industrial control signals such as 4-20mA or 0-10V, and the actuator immediately drives the valve core to move, change the size of the valve channel, and realize accurate control of fluid flow. Sometimes, the electric control valve is also equipped with a position sensor, which feeds back the actual position information of the valve to ensure the accuracy of control.
There are many types of electric control valves on the market, which can be divided into two categories: linear and quarter-turn according to their structure. Linear turn valves are suitable for large flow and high differential pressure adjustment occasions, while quarter-turn valves are more suitable for small flow and low differential pressure occasions. According to different uses, electric control valves can also be divided into single-seat, double-seat, sleeve and other forms.
In HVAC systems, electric control valves are used to control the flow of hot and cold water to achieve precise regulation of the indoor temperature. In the petrochemical industry, it regulates the flow of raw materials or finished products in the chemical process to ensure the balance of chemical reactions and the quality of products. In the field of water treatment, electric control valves are used to control the flow of water to ensure that the quality and quantity of water meet the requirements.
In short, the electric control valve has become an indispensable equipment for various automatic control systems due to its sensitive response and precise control. Understanding and selecting the right electric control valve plays an important role in ensuring the stable operation of the entire control system. Due to its wide range of applications in various fields, users need to consider the type of valve, parameters and the specific requirements of the application when selecting to achieve the best adjustment results.