The working principle of fluorine-lined plug valve

The working principle of the fluorine-lined plug valve: A valve with a plug body with a through hole as an opening and closing part. The plug body rotates with the valve stem to realize the opening and closing action. The small unpacked plug valve is also known as the plug valve 'cock'. The plug body of the plug valve is mostly a cone (also a cylinder), which cooperates with the conical hole surface of the valve body to form a sealing pair. The plug valve is the earliest valve used, with simple structure, rapid switching and small fluid resistance. The ordinary plug valve is sealed by the direct contact between the finished metal plug body and the valve body, so the sealing performance is poor, the opening and closing force is large, and it is easy to wear. diameter (less than 100 mm).