Where are the pneumatic cryogenic ball valves mainly used?

Pneumatic cryogenic ball valve is used to output liquid cryogenic medium such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc. It is not only inflammable and explosive, but also gasifies when it is heated, and its volume expands hundreds of times when it is gasified. The material of the LNG valve is very important. Unqualified materials will cause leakage or internal leakage of the shell and sealing surface; the comprehensive mechanical properties, strength and rigidity of the parts cannot meet the requirements of use or even break. The leakage of liquefied natural gas medium caused an explosion. Therefore, in the process of developing, designing, and developing LNG valves, material is the most important issue. The valve body and bonnet are made of special materials such as low temperature resistant stainless steel and low temperature resistant cast steel. Pneumatic cryogenic is one of the indispensable important equipment in petrochemical, air separation, natural gas and other industries. Its quality determines whether it can be produced safely, economically and continuously. Cryogenic ball valves are divided into low-temperature floating ball valves and low-temperature fixed ball valves. For the temperature higher than -50℃, the long neck structure is generally not adopted. For the ball valve with the temperature lower than -50℃, the neck length T is generally 250mm, or according to me The company’s design and calculations are determined.