The AOC-6840C series deep order regulating valve is mainly used for precise adjustment and cutting of ultra-low temperature medium. The temperature of the working conditions can be as low as -196 ° C. It is suitable for low-temperature devices such as ethylene, liquefied natural gas, vacuum, and transformer adsorption oxygen. Each deep -cold regulatory valve produced by Fiter is prohibited and dehydrated during the installation of the valve. Each component is processed to prevent the parts from cracking during actual use and simulate the deep cold conditions before the factory is out of the factory. Perform stress and leakage test in nitrogen, and the quality of the air is tested.