金属硬密封球阀为偏心金属密封结构，密封形式可分为：金属对金属密封，可调换金属密封圈对金属密封，不锈钢板与石墨复合板密封圈对金属密封。硬密封蝶阀的驱动形式除了电动之外还有手动，蜗轮杆传动，气动等。本类阀门在管道中一般应当水平安装。
彻底改变了金属硬密封球阀艺泄露、扭矩、密封面不耐腐蚀的缺点。
It wholly changes the defects of hard-sealed metal ball valves such as easy to be leaked, big torsional moment and non-corrosive seal surface.
䅒3。彻底改变了金属硬密封球阀易泄露、扭矩大、密封面不耐腐蚀的缺点。
3 completely changed the metal seal valve easy to leak, torque, sealing surface corrosion of the shortcomings of impatience.
金属硬密封球阀的阀体、阀座、球体等金属零部件紧密接触，自然形成了静电通道。
Metal to metal sealed ball valve with its body seat, ball, other metal parts, and so forth, closely contact with each other, having naturally formed a static electricity passage.
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