译文：
球阀有O型球阀和V型球阀之分。O型球阀采用浮动式结构，球芯为精密铸件，外表镀硬铬处理，阀座采用增强聚四氟乙烯材料，流道口与管道口径相同，流通能力极大，流阻极小，关闭时无泄漏，一般做开关阀使用，特别适用于高粘度、含纤维、颗粒状介质；V型球阀采用固定式结构，球芯上开有V型切口，可实现比例调节，流量特性为近似等百分比。 根据工艺设备不同可选用气动或电动执行机构，分别组成气动球阀和电动球阀，其中气动球阀如要实现比例调节须配阀门定位器，电动球阀如要实现比例调节须选电子式电动执行机构或配伺服放大器等。

“ Classification and characteristics of ball ”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 and ball valve with O-V-ball of points. O-ball floating structure, the ball core is precision casting, Hard chrome plated, seat materials with PTFE, the same stream crossing with pipe diameter, maximum flow capacity, flow resistance is extremely small, closed no leakage, the general make switch valve use, especially for high viscosity, including fiber, granular media; V-type ball valve with a fixed structure, the core on the ball to open a V-notch can be adjusted to achieve the ratio, flow characteristics of the approximate equal percentage. According to different process equipment used pneumatic or electric actuator, forming an air ball and electric valve, pneumatic valve which such adjustment to be allocated to achieve proportional valve positioner, the electric valve to adjust the ratio to be achieved, such as electronic elections with electric actuator or servo amplifier.