行业新闻

原文
Basic knowledge of ball Ball and plug valves of a type is the same, only it is a sphere of the closure member, for rotating the sphere around the body center line to achieve open and close a valve. The main valve in the pipeline used for cutting, distribution and change the direction of medium flow. Ball is widely used in recent years, a new valve, it has the following advantages: 1. Fluid resistance, the resistance coefficient and the length of the pipe with the same. 2. Simple structure, small size and light weight. 3. Strong, reliable, current valve sealing surface material widely used plastic, sealing in the vacuum system has also been widely used. 4. Easy to operate, opening and closing rapidly, from fully open to fully closed as long as the rotation 90 °, to facilitate the remote control. 5. Easy maintenance, simple ball valve, seals are generally active, are relatively easy to replace demolished. 6. In the fully open or fully closed, the ball and seat sealing surface and the dielectric isolation, the medium through, will not cause erosion of the valve sealing surface. 7. Wide range of applications, from small to a few millimeters in diameter, large meters, from high vacuum to high pressure can be applied. Ball has been widely used in petroleum, chemical, power generation, paper, atomic energy, aviation, rockets and other departments, as well as people's daily lives.
原文来自：http://www.ballvalve.org.cn

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译文：
球阀和旋塞阀是同属一个类型的阀门，只有它的关闭件是个球体，球体绕阀体中心线作旋转来达到开启、关闭的一种阀门。球阀在管路中主要用来做切断、分配和改变介质的流动方向。球阀是近年来被广泛采用的一种新型阀门，它具有以下优点： 1．流体阻力小，其阻力系数与同长度的管段相等。 2．结构简单、体积小、重量轻。 3．紧密可靠，目前球阀的密封面材料广泛使用塑料、密封性好，在真空系统中也已广泛使用。 4．操作方便，开闭迅速，从全开到全关只要旋转90°，便于远距离的控制。 5．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。 6．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。 7．适用范围广，通径从小到几毫米，大到几米，从高真空至高压力都可应用。球阀已广泛应用于石油、化工、发电、造纸、原子能、航空、火箭等各部门，以及人们日常生活中。

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