译文：
球阀的工作原理是靠旋转阀恋来使阀门畅通或闭塞。球阀开关轻便，体积小，可以做成很大口径，密封可靠，结构 简单，维修方便，密封面与球面常在闭合状态，不易被介质冲蚀，在各行业得到广泛的应用。 球阀分两类，一是浮动球式，二是固定球式。 球阀在灌溉系统中应用较广泛，主要用在支管进口处。球阀结构简单，体积小，对水流的阻力也小，缺点是开启或关闭太快，会在管道中产生水锤（管道内水流速度突然变化时压力会升高）。因此在主干管上不宜采用球阀，可用在在干、支管上或其末端作冲冼之用，冲洗排污效果好。

“ Ball and practical role of the working principle”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：
Ball valve works by love to make the rotary valve by valve flow or occlusion. Valve switch light, small size, can be made into a great caliber, reliable sealing, simple structure, easy maintenance, sealing surface and the spherical often closed state, not easily to be medium erosion, in all sectors is widely used. Two types of ball valves, floating ball first, second, fixed ball. Valve in the irrigation system was widely applied, mainly used in the branch entrance. Valve structure is simple, small, on the water's resistance, which disadvantages are open or closed too quickly, will produce water hammer in pipelines (pipelines with a sudden change in speed when the pressure increases). Therefore not appropriate in the main pipe valve can be used in the dry, or the end of the branch pipe for wash-use, effective cleaning sewage.