该系列是一款90°部分回转手动驱动装置。适用于球阀、蝶阀、旋塞阀等阀门。箱体采用精密铸造，样式新颖，外形美观。采用蜗轮蜗杆传动，蜗轮副自锁，使用圆锥滚子承轴，传动 加灵活，效率高。蜗轮与阀门阀杆连接部分由实体和内置螺母两款供客户选择，法兰全部采用ISO5211国际标准，与阀门配套 加方便。防护等级为IP65.特殊环境还可做到IP68. 

   It is quarter turn gear actuator, suit to be used on ball valves,butterfly valves,plug valves housing made by precise casting, and the gear boxes have fresh pattern and nice transmitted by worm gear and worm, and the worm gear with self-locking,also by using tapered roller bearing, the gear box can be operated more flexibly and have higher nut can be uni-body or separated just according to customers' mounting flange adapts to Protection grade can be IP65, for some special environment, it also can be IP68.