This valve is a control ultla-low temperature fluid, such as liquid helium whose service temperature is close to the absolute zero degree.
The valve is installed by welding in a vacuum container.
The valve trim has a structure which prevents galling themal oscillation at low-temperature operation and provides good shutoff performance even if the pipe is deformed to some degree due to thermal change.
![cat08_a](https://www.thaipointglobal.co.th/wp-content/uploads/2020/02/cat08_a.jpg)
![cat08_b](https://www.thaipointglobal.co.th/wp-content/uploads/2020/02/cat08_b.jpg)
![ตาราง-02](https://www.thaipointglobal.co.th/wp-content/uploads/2020/02/ตาราง-02-5-scaled.jpg)