Pipeline transportation has become the primary mode of energy transport in modern times, and the resulting development of pipeline valves has been rapid, greatly promoting the progress of pipeline transportation. How exactly are pipeline valves defined, and what are the differences in their structure, characteristics, and performance? Today, let’s take a closer look at the unique features of pipeline valves.

Faced with numerous valve classifications and complex operating conditions, selecting the most suitable valves for pipeline systems requires, first, understanding valve characteristics; second, mastering the steps and criteria for valve selection; and third, adhering to the principles for selecting valves used in the petroleum and chemical industry.

Valves are control components in fluid transport systems. They can be used in fluid control systems to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. Standards for Determining Internal Leakage in Valves The method for determining internal leakage in valves is as follows: After the valve has been closed for 4-6 hours, use an infrared thermometer to measure the metal temperature at the valve stem (near the valve body) or 150mm downstream of the valve body. If the temperature exceeds 70℃, it is considered an “internal leak.” This method is applicable to most valves with internal leaks.