The most common ones we see on site are Sanitary Valve. The three-impulse control of the drum liquid level and the combustion control of the boiler are all controlled by the size of the valve opening and closing. The purpose of our algorithm is also to control the size of the valve opening and closing, so as to achieve automatic control. The use of valves is extensive, so they play a great role. For example: in power plants, valves can control the operation of boilers and turbines; in petroleum and chemical production, valves also control the normal operation of all production equipment and process flows. Despite this, valves are often overlooked compared to other products. For example: when installing machinery and equipment, people often focus on the main machinery and equipment, such as compressors, high-pressure vessels, boilers, etc. These practices will reduce the overall production efficiency or stop production, or cause various other accidents, so it is necessary for us to understand and know valves.