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球閥的主要特點：
本身結構緊湊，密封可靠，結構簡單，維修方便，密封面與球面常在閉合狀態，不易被介質沖蝕，易于操作和維修，適用于水、溶劑、酸和天然氣等一般工作介質，而且還適用于工作條件惡劣的介質，如氧氣、過氧化氫、甲烷和乙烯等，在各行業得到廣泛的應用。球閥閥體可以是整體的，也可以是組合式的。
球閥不僅結構簡單、密封性能好，而且在一定的公稱通徑范圍內體積較小、重量輕、材料耗用少、安裝尺寸小，并且驅動力矩小，操作簡便、易實現快速啟閉，是近 十幾年來發展zui快的閥門品種之一。球閥是由旋塞閥演變而來的，它的啟閉件作為一個球體，利用球體繞閥桿的軸線旋轉90°實現開啟和關閉的目的。球閥在管道上主要用于切斷、分配和改變介質流動方向，設計成V形開口的球閥還具有良好的流量調節功能。
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