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原文
Ball valve product features and installation considerations The ball valve T-and L-type. T-enable the three orthogonal pipes interconnected and cut off the third channel, divert traffic, the confluence of the role. L-type can only be connected to two mutually orthogonal pipeline, while maintaining the third pipeline interconnected, only as a distribution function. Ball Valve Installation and Maintenance Precautions: 1, the valve should be left to the position of the valve stem rotation 2, ball valve can not be used for throttling. 3, the ball valve of the ball valve with a drive mechanism should be upright installation. Features A ball valve in the structure of the integrated structure of the four side of the valve seat seal type, less flange connection, high reliability, the design of lightweight 2, tee ball core sub-T-and L-type, long life, large flow capacity, small resistance 3, ball valve, according to acting two types of single and double acting, single acting style is characterized by the power source failure, the valve will be in the status of the control system requirements.
原文来自：http://www.ballvalve.org.cn

是由上海日美阀门制造有限公司提供的阀门新闻，中文译文仅供参考，以下提供站内导航搜索：

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译文：
三通球阀产品特点与安装注意事项　　三通球阀有T型和L型。T型能使三条正交的管道相互联通和切断第三条通道，起分流、合流作用。L型只能连接相互正交的两条管道，不能同时保持第三条管道的相互连通，只起分配作用。　　球阀安装与维护注意事项： 1、球阀要留有阀柄旋转的位置 2、球阀不能用作节流。 3、球阀带传动机构的球阀应直立安装。产品特点　　1、三通球阀在结构上采用一体化结构，4面阀座的密封型式，法兰连接少，可靠性高，设计实现了轻量化　　2、三通球芯分T型和L型，使用寿命长，流通能力大，阻力小　　3、球阀按作用式分单作用和双作用两种型式，单作用式的特点是一旦动力源发生故障时，球阀将处于控制系统要求的状态。

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