Supply Zhejiang Chengyi low temperature ball valve

r, > Low-temperature ball valves are divided into two categories: low-temperature floating ball valves and low-temperature fixed ball valves. For temperatures above ℃, long-neck structures are generally not used. For ball valves with temperatures below ℃, the neck length is generally, or according to our company's The design and calculation are determined. The cryogenic ball valve is mainly used to output liquid cryogenic media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc. It is not only flammable and explosive, but also vaporizes when the temperature rises. When vaporized, the volume Expand hundreds of times.
<:rr, , The material of the LNG valve is very important. If the material is not qualified, it will cause external leakage or internal leakage of the shell and sealing surface. The comprehensive mechanical properties, strength and steelness of the parts cannot meet the usage requirements or even fracture. Leading to leakage of liquefied natural gas medium causing explosion. Therefore, in the process of developing, designing and manufacturing LNG valves, material is the first and key issue. The valve body and valve cover are made of: CB(℃), C(℃), C(℃).
<:rr, , Our factory undergoes special low-temperature treatment for the low-temperature valves produced, and the rough-processed parts Place it in the cooling medium for several hours (hours) to relieve stress, ensure the low-temperature performance of the material, and ensure the finishing size to prevent leakage caused by deformation due to temperature changes when the valve is under low-temperature conditions