低温阀门特点的探讨

详述了低温阀门不同于普通阀门的材料选用要求，常用低温材料最低设计温度范围，检测和热处理特点，并介绍了低温阀门特有的长颈及释放孔结构，以及试验和安装中的特点和特殊要求，结合长期监造过程发现的国内厂家阀门产品的常见问题，为低温阀门的设计，采购，检测，安装与使用提供一定的参考。

The Characteristics of Cryogenic Valve

The differences between the cryogenic valve and normal valve in material select requirement,lowest design scope of common cryogenic material,test and heat treatment character were explained,and the cryogenic valve's special extend bonnet and release hole,and the unique test and installation requirement were introduced,integrated with the local manufacture's common problem found in long-term valve inspection,provided reference for the design,purchase,test,installation and operation of cryogenic valves.