This control valve is a control valve which controls ultra-low temperature fluid, such as liquid helium whose service temperature is close to the absolute zero degree. There are two kinds of extension length. One is for 0℃ to -50℃, and the other is for -51℃ to -196℃.
![cat08_d](https://www.thaipointglobal.co.th/wp-content/uploads/2020/02/cat08_d.jpg)
![ตาราง-01](https://www.thaipointglobal.co.th/wp-content/uploads/2020/02/ตาราง-01-5-scaled.jpg)