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A type of hard seal ball valve
Author(s): 
Pages: 34-35
Year: Issue:  2
Journal: Valve

Keyword:  硬密封 球阀;
Abstract: 介绍了一种硬密封球阀的结构,该球阀在阀座和球体间增加了螺线传动机构,阀门在启闭时,球体与阀座间无摩擦,延长了阀门的使用寿命,减小了启闭力矩。
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