原文：
              塞阀又称为“考克”。旋塞阀的塞体多为圆锥体(也有圆柱体)，与阀体的圆锥孔面配合组成密封副。旋塞阀是使用最早的一种阀门，结构简单、开关迅速、低温阀门 流体阻力小。普通旋塞阀靠精加工的金属塞体与阀体间的直接接触来密封，所以密封性较差，启闭力大，容易磨损，通常只能用于低(不高于1兆帕)和小口径(小于100毫米)的场合。船用阀门为了扩大旋塞阀的应用范围，已研制出许多新型结构。油润滑旋塞阀是最重要的一种。特制的润滑脂从塞体顶端注入阀体锥孔与塞体之间，形成油膜以减小启闭力矩，提高密封性和使用寿命。它的工作压力可达64兆帕，最高工作温度可达325℃，最大口径可达600毫米。钛、镍、锆、蒙乃尔及合金阀门旋塞阀的通道有多种形式。常见的直通式主要用于截断流体。三通和四通式旋塞阀适用于流体换向旋塞阀的启闭件是一个陶瓷阀门有孔的圆柱体，绕垂直于通道的轴线旋转，从而达到启闭通道的目的。旋塞阀主要供开启和关闭管道和设备介质之用。

 　　旋塞阀主要优点如下：

　　适用于经常操作，启闭迅速、消防阀门 轻便。

　　流体阻力小。　　结构简单，相对体积小，重量轻，便于维修。

　　密封性能好。　　不受安装方向的限制，介质的流向可任意。

　　无振动，噪声小。　　旋塞阀按结构形式可分为紧定式旋塞阀、自封式旋塞阀、填料式旋塞阀和注油式旋塞阀四种。按通道形式分，可分为直通式、三通式和四通式三种。

“ Plug works and its advantages ”是由中国旋塞阀网提供的国际阀门新闻，译文仅供参考。另外，中国旋塞阀网还提供相关产品搜索： 二通旋塞阀、 三通旋塞阀、 油密封旋塞阀、 更多旋塞阀产品、 旋塞阀价格、等。

译文：
            Plug valves, also known as "Hancock." Plug the plug body mostly cone (also cylinder), and the body of the tapered bore surface with the composition of seal pair. Plug valve is a valve using the first,Forged Gate, Globe, Check Valves simple, switch quickly, the fluid resistance. General plug valve plug by the metal finishing and valve body to direct contact between the sealing, poor sealing, opening and closing force, easy to wear, usually only for low (noBall Valves higher than 1 MPa) and small diameter (less than 100 mm) of occasions. In order to expand the scope of application plug, has developed many new structures. Lubricated plug valve is the most Cast Gate, Globe, Check Valvesimportant one. Special grease plug body from the top of taper and plug into the valve body between the formation of oil film to reduce the opening and closing torque, improve sealing performance and service life. Its working pressure up to 64 MPa, the maximum operating Resilient Seated Gate Valvestemperature up to 325 ℃, the maximum diameter up to 600 mm. Plug the channel in various forms. Commonly used straight-cut fluid. Three and four-way type plug to plug suitable fluid for the opening and closing parts is a hole in the cylinder, around the rotation axis perpendicular to the channel, so as to achieve the purpose of open and close channels. Plug for opening and closing the main pipe and equipment used media. Plug main advantages are as follows: Applicable to the regular operation, open and close quickly, light. Fluid resistance. Simple structure, relatively small Automatic Control Valvessize, light weight, easy maintenance. Seal. Not subject to restrictions on the mounting direction, the flow medium can be arbitrary. No vibration, noise. Plug form of the structure can be divided into fastening plug, self-proclaimed style plug, filler-type plug and the plug-injection of four. According to the form of sub-channels can be divided into straight-through, links-style and four-way type of three.

原文来源：http://www.1xuansaifa.com/

2010-08-23 06:36

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