电动法兰截止阀是一种比较新型的闸阀类别，它有着自身结构所*的一些优越性，如开关无摩擦，密封不易磨损，启闭力矩小。

电动法兰截止阀产品优点：
　　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，目前闸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，闸阀结构简单，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。
工作原理
　　电动截止阀,美标闸阀的工作原理是靠旋转阀恋来使阀门畅通或闭塞。闸阀开关轻便，体积小，可以做成很大口径，密封可靠，结构 简单，维修方便，密封面与球面常在闭合状态，不易被介质冲蚀，在各行业得到广泛的应用。
电动截止阀在管路中主要用来做切断、分配和改变介质的流动方向。
电动法兰截止阀广泛适用于石油化工、城市给排水等要求严格切断的工况。

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