久久av水牛一区二区-91精品国产综合久久香蕉922-福利视频一区二区三区免费-精品人妻一区二区三区四区中文字幕-日本无卡一区二区-久久久美女18禁-五月婷婷在线看-91唐先生在线视频-亚洲欧美在线观看国产日产,麻豆免费一区二区三区漫画,成人国产亚洲高清电影,婷婷成人激情爽久久

The series of sanitary butterfly valve is pneumatically or manually operated,widely used in food,beverage,brewing dairy and biological engineering industries,with an intended purpose of controlling and regulating medium flow in pipelines

The valve can be manually operated via a handle,or remotely controlled by an electric or pneumatic actuator.

The electric or pneumatic actuator converts the axial movement of piston to the rotation of shaft.So that the valve can be open or close and thus control the pipeline system.There are three types of actuator:normally open（NO),normally closed(NC),ais/air(A/A).

Via a multi-position duckbill handle,the valve can be lockable in 12 positions by 15°,achieving the purpose of medium flow controlling.

Alternatively ,to control the medium flow,one can also use a pulling handle which is able to lock the valve through four multi-function positions.