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译文：
气动球阀是由截止阀演变而来。它具有相同的旋转90度动作，不同的是旋塞体是球体，有圆形通孔或通道通过其轴线。球面和通道口的比例应该是这样的，即当球旋转90度时，在进、出口处应全部呈现球面，从而截断流动。本类阀门在管道中可任意位置安装。 明精气动球阀只需要用气动执行器用气源旋转90度的操作和很小的转动力矩就能关闭严密。xx平等的阀体内腔为介质提供了阻力很小、直通的流道。通常认为球阀最适宜直接做开闭使用，但近来的发展已将球阀设计成使它具有节流和控制流量之用。球阀的主要特点是本身结构紧凑，易于操作和维修，适用于水、溶剂、酸和天然气等一般工作介质，而且还适用于工作条件恶劣的介质，如氧气、过氧化氢、甲烷和乙烯等。球阀阀体可以是整体的，也可以是组合式的。

“ Pneumatic valve and pneumatic valve clear distinction between fine ”是由提供的国际阀门新闻，译文仅供参考。另外，中国球阀网还提供相关产品搜索：、、、、等。

原文：
Pneumatic valve was evolved from the cut-off valve. It has the same 90-degree rotation movement is cock body is different sphere, there are circular holes or channels through its axis. The ratio of the sphere and the openings should be such that when the ball is rotated 90 degrees, the import and export office should be fully present sphere, thus cutting off the flow. This type valve in the pipe can be installed anywhere. Ming Jing pneumatic valve pneumatic actuator Used only need 90 degrees air supply operation and a small rotational torque can be closed tightly. Full equality for the medium body cavity to provide a little resistance, through the flow channel. Generally considered the most suitable valve opening and closing used directly to do, but the recent development has been designed to make it a throttle valve and flow control purposes. The main characteristics of ball valve itself compact, easy operation and maintenance for water, solvents, acids, and natural gas general working media, but also to poor working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene . Ball valve can be integral, it can be modular.