該系列是一款90°部分迴轉手動驅動裝置。適用於球閥、蝶閥、旋塞閥等閥門。箱體採用精密鑄造，樣式新穎，外形美觀。採用蝸輪蝸桿傳動，蝸輪副自鎖，使用圓錐滾子承軸和推力球軸承結合，傳動 加靈活，效率高。蝸輪箱輸出扭矩與連接法蘭標準扭矩相匹配，閥杆外徑和安裝高度符合國際標準。法蘭全部採用ISO5211國際標準，與閥門配套 加方便。防護等級爲IP65.特殊環境還可做到IP68以及浸沒模式. These are quarter turn gear actuators, suitable for ball valves,butterfly valves and plug valves housing is precisely cast, with fresh pattern and nice transmitted by worm gear and worm,-torque of actuators matches with connecting flange standard, stem diameter and install height are all international connectting flange adapts to I.S.O.5211 makes it easy working with grade can be IP65, IP67, IP68 and Immersion mode according to customers requirements.