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特点
一 由于硬密封球阀的阀芯是合金钢喷焊，密封圈是合金钢堆焊，所以硬密封球阀在开关时不会产生太大的磨损。（它的硬度系数为65-70）：
二；密封性能好；由于硬密封球阀的密封是采用人工研磨，直到阀芯与密封圈完全吻合才能使用。所以他的密封性能是可靠的。
三；开关轻；由于硬密封球阀的密封圈底部采用弹簧使密封圈与阀芯紧紧抱在一起，所以在外界力量超过弹簧的预紧力时开关非常轻。
四；使用寿命长：已 应用于石油、化工、发电、造纸、原子能、航空、火箭等各部门，以及人们日常生活中。

气动球阀结构紧凑，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，易于操作和维修，适用于水 、溶剂、酸和天然气等一般工作介质，主要用于截断或接通管路中的介质，亦可用用于流体的调节与控制，气动球阀与其它阀门种类相比，具有角行程输出扭矩，开启迅速、平稳可靠，适用 ，等以下一些优点。