Ball valve uses ball with circular hole as open-close part ,through turning ball with stem to realize on-off movement.Ball valve is mainly applied to stop ,distrubute and change flowing direction of medium.
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释义
球阀是用带圆形的通孔的球体作启闭件,球体随阀杆转动,以实现启闭动作的阀门,球阀在管道中主要用于切断,分配和改变介质流动方向。
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