色婷婷粉嫩av-中文字幕av无码一区二区三区-wwwwxxxx国产-天天操天天干视频-日本人dh亚洲人ⅹxx-精品人妻一区二区三区蜜桃

QDX3系列部分回轉型閥門手動裝置

QDX3 Series part of the transirion back to the manual valve device

      該系列是一款90°部分回轉驅動裝置，適用于球閥、蝶閥、旋塞閥等類型閥門。該系列蝸輪箱適用環境廣、功能全面、形式多樣(有手輪式、手輪帶鎖式、鏈輪式等)，特殊型可輸出360°多回轉。產品共有9種型號。

The series is a 90° otary drive for ball valves, butterfly valves, plug valves and other types of valves. The series of worm gear box for environment wide, full-features, un various forms (with hand wheel, hand wheel locking type, wheel type, ets.), special type can output more than 360° urn. Product 9 models.