进口气动信号球阀
美国力沃LEO进口气动信号球阀主要用于截断或接通管路中的介质，亦可用用于流体的调节与控制，它与其它阀类相比，具有以下一些优点。
1、流体阻力小、球阀是所有阀类中流体阻力zui小的一种，即使是缩径球阀，其流体阻力也相当小。
2、止推轴承减小阀杆磨擦力矩，可使阀杆*操作平稳灵活。
3、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，而且球阀的阀封能力随着介质压力的增高而增大。
4、阀杆密封可靠，由于阀杆只作彷转动运而不做升降运动，阀杆的填料密封不易破坏，且密封能力随着介质的压力增高而增大。
5、由于聚四氟乙烯等材料具有良好的自润滑性，与球体的磨擦损失小，故球阀的使用寿命长。
6、下装式阀杆和阀杆头部凸阶防止阀杆喷出，如火灾造成阀杆密封破坏，凸阶与阀体间还可形成金属接触，确保阀杆密封。
7、 防静电功能：在球体、阀杆、阀体之间设置弹簧，能将开关过程产生的静电导出。 执行机构
Pneumatic valve is mainly used for truncation or signal LEOne connected to the media, can also be used for fluid regulation and control, it is compared with other valves, has the following advantages.
1, fluid resistance, ball valves in all a fluid path of least resistance, even reduced diameter valve, the fluid resistance is quite small.
2, stem thrust bearing reduces friction torque, smooth operation can stem the long-term flexibiLEOty.
3, the valve seat seaLEOng performance, the use of PTFE seals and other flexible materials, structure easy to seal, and the abiLEOty with the ball valve closure increased with increasing media pressure.
4, valve stem seals and reLEOable, due to stem not only do the operation for turning down imitation of movement, stem packing seal is not easy to destroy, and the seaLEOng abiLEOty increased with the increase of the pressure medium.
5, the PTFE and other materials with good self-lubrication, the friction loss with the ball, so the ball's long LEOfe.
6, download style stem and stem spray head convex order to prevent the stem, causing stem seal damage such as fire, convex order and the body can be formed between the metal contact, to ensure that the valve stem seals.
7, anti-static function: the ball, stem, between the valve spring set, static electricity generated by the switching process can export. Executive body.
