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介绍了气液联动装置正常启闭和紧急切断所使用的小口径全焊球阀的结构特点、安装位置、适用范围以及该阀门在市场的应用情况。
The structural features, installation location, application scope and the application of the valve in the market are introduced for the small diameter all-welded ball valve used in the normal opening and closing and emergency cutting of the gas-liquid linkage.