高真空閥門 美國(guó)A＆N公司 美國(guó)進(jìn)口閥門

球閥提供直通式，以zui小的閥體足跡的暢通。 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*的設(shè)計(jì)，球閥比其他真空閥微粒污染不太敏感，因此，“臟”的真空應(yīng)用中是特別有用的。 For example, ball valves are almost always used to isolate scrubbers and traps downstream of the rough pumping system.例如，球閥幾乎總是被用來隔離粗糙的泵送系統(tǒng)的下游的洗滌器和陷阱。

Principles of Operation and Construction: Ball valves are made of a body, stem, ball, and end caps.的構(gòu)造和操作原理：球閥是由主體，莖，球，端蓋。 The ball is sealed within the body by end caps creating a vacuum tight central cavity.身體內(nèi)的密封球是通過創(chuàng)建一個(gè)真空密閉的*腔的端蓋。 The valve is opened and closed by turning the stem 90° back and forth （1/4 turn）.該閥被打開和關(guān)閉，通過旋轉(zhuǎn)閥桿90°（1/4圈）來回。 The sealing seat for the ball wipes the ball clean as it is opened and closed.為球的密封座擦拭球清潔，因?yàn)樗淮蜷_和關(guān)閉。 This last features provides the "self-cleaning" action that makes this valve fairly robust to particle-rich effluent streams.這zui后一個(gè)功能，提供了“自潔”的動(dòng)作，使得這種閥門相當(dāng)強(qiáng)勁，豐富的粒子流。 Pneumatic actuators are available.氣動(dòng)執(zhí)行器。