The thrust bearing reduces the friction torque of the valve stem, which can ensure smooth and flexible operation of the valve stem.

防静电功能：在球体阀杆阀体之间设置弹簧，能将开关过程中产生的静电导出。

Anti static function: A spring is installed between the ball valve stem and valve body, which can export the static electricity generated during the switching process.

由于聚四氟乙烯等材料具有良好的自润滑性，与球体的摩擦损失小，故气动球阀的使用寿命长。

Due to the good self-lubrication of materials such as polytetrafluoroethylene and low friction loss with the ball, the service life of pneumatic ball valves is long.

流体阻力小：气动球阀是所有阀门分类中流体阻力较小的一种，即使是缩径气动球阀，其流体阻力也相当小。

Low fluid resistance: Pneumatic ball valves have the lowest fluid resistance among all valve classifications, even for reduced diameter pneumatic ball valves, their fluid resistance is relatively small.

阀杆密封可靠：由于阀杆只作转动运动而不做升降运动，阀杆的填料密封不易破坏，且密封能力随着介质压力的增高而增大。

Reliable valve stem sealing: Due to the fact that the valve stem only rotates without lifting, the packing seal of the valve stem is not easily damaged, and the sealing capacity increases with the increase of medium pressure.

阀座密封性能好：采用聚四氟乙烯等弹性材料制成的密封圈，结构易于密封，而且气动球阀的阀封能力随着介质压力的增高而增大。

Good sealing performance of the valve seat: The sealing ring made of elastic materials such as polytetrafluoroethylene is easy to seal in structure, and the sealing capacity of the pneumatic ball valve increases with the increase of medium pressure.

流体阻力小，全通径的球阀基本没有流阻。

The fluid resistance is small, and the full bore ball valve has almost no flow resistance.

结构简单体积小重量轻。

Simple structure, small size, light weight.

紧密可靠。它有两个密封面，而且球阀的密封面材料广泛使用各种塑料，密封性好，能实现密封。在真空系统中也已广泛使用。

Tight and reliable. It has two sealing surfaces, and the sealing surface material of the ball valve is widely used with various plastics, which has good sealing performance and can achieve sealing. It has also been widely used in vacuum systems.

操作方便，开闭迅速， 球阀 从全开到全关只要旋转90°，便于远距离的控制。

Easy to operate, quick to open and close, ball valve can rotate 90 ° from full open to full close, making it easy to control from a long distance.

维修方便，球阀结构简单，密封圈一般都是活动的，拆卸更换都比较方便。

Convenient maintenance, simple ball valve structure, and generally movable sealing rings make disassembly and replacement more convenient.

在全开或全闭时，球体和阀座的密封面与介质隔离，介质通过时，不会引起阀门密封面的侵蚀。

When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, and when the medium passes through, it will not cause erosion of the valve sealing surface.

适用范围广，通径从小到几毫米，大到几米，从高真空高压力都可应用。

It has a wide range of applications, with diameters ranging from a few millimeters to several meters, and can be applied from high vacuum to high pressure.

由于球阀在启闭过程中有擦拭性，所以可用于带悬浮固体颗粒的介质中。

Due to its wiping properties during the opening and closing process, ball valves can be used in media with suspended solid particles.

加工精度高，造价昂贵，高温中不宜使用，如管道内有杂质，容易被杂质堵塞，导致阀门无法打开。

High processing accuracy, high cost, and unsuitable for use in high temperatures. If there are impurities in the pipeline, it is easy to be blocked by impurities, resulting in the valve being unable to open.