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特點
一 由于硬密封球閥的閥芯是合金鋼噴焊，密封圈是合金鋼堆焊，所以硬密封球閥在開關時不會產生太大的磨損。（它的硬度系數為65-70）：
二；密封性能好；由于硬密封球閥的密封是采用人工研磨，直到閥芯與密封圈完全吻合才能使用。所以他的密封性能是可靠的。
三；開關輕；由于硬密封球閥的密封圈底部采用彈簧使密封圈與閥芯緊緊抱在一起，所以在外界力量超過彈簧的預緊力時開關非常輕。
四；使用壽命長：已 應用于石油、化工、發電、造紙、原子能、航空、火箭等各部門，以及人們日常生活中。

氣動球閥結構緊湊，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，主要用于截斷或接通管路中的介質，亦可用用于流體的調節與控制，氣動球閥與其它閥門種類相比，具有角行程輸出扭矩，開啟迅速、平穩可靠，適用 ，等以下一些優點。