一、Structural Feature  

Model H47X，H47H，HH47X，HH47H，HDH47X butterfly buffering check valves are used on the outlet of the water pump of industrial water supply and sludge treat-ment plant to prevent the medium inside of the pipe network from going back and automatically remove the destructive water hammer so as to ensure both pump and pipeline not to get damaged It consists of body，disc．buffer and micro-adjusting valve and features a brand new structure，small volume，small fluid resistance，reli-able seal，wearable and good buffering performance．Really the besh product for in-dustrial use of water and city sludge drainage．

二、 Material For Main Parts

三、Main technical Parameters

四、 Main External And Connecting dimensions