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，傳動 加靈活，效率高。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.e.型號大小：YZ-1-S~YZ-10-S共8個尺寸供選擇，扭矩範圍1300-400000Nm.

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, with self-locking roller bearing and thrust ball  -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.