高真空阀门 美国A＆N公司 美国进口阀门

高真空阀门 美国A＆N公司 美国进口阀门

球阀提供直通式，以zui小的阀体足迹的畅通。 Because of their unique design, ball valves are less sensitive than other vacuum valves to particulate contamination and, therefore, are especially useful in 'dirty' vacuum applications.由于其*的设计，球阀比其他真空阀微粒污染不太敏感，因此，“脏”的真空应用中是特别有用的。 For example, ball valves are almost always used to isolate scrubbers and traps downstream of the rough pumping system.例如，球阀几乎总是被用来隔离粗糙的泵送系统的下游的洗涤器和陷阱。

Principles of Operation and Construction: Ball valves are made of a body, stem, ball, and end caps.的构造和操作原理：球阀是由主体，茎，球，端盖。 The ball is sealed within the body by end caps creating a vacuum tight central cavity.身体内的密封球是通过创建一个真空密闭的*腔的端盖。 The valve is opened and closed by turning the stem 90° back and forth （1/4 turn）.该阀被打开和关闭，通过旋转阀杆90°（1/4圈）来回。 The sealing seat for the ball wipes the ball clean as it is opened and closed.为球的密封座擦拭球清洁，因为它被打开和关闭。 This last features provides the "self-cleaning" action that makes this valve fairly robust to particle-rich effluent streams.这zui后一个功能，提供了“自洁”的动作，使得这种阀门相当强劲，丰富的粒子流。 Pneumatic actuators are available.气动执行器。