The ball valve is characterized by low flow resistance, reliable sealing, fast opening and closing and long service life, has been widely used for various critical engineering and manufacturing applications. A ball valve should be installed horizontally in the pipeline to cut off, distribution and change the flow direction of the medium, it just only needs to rotate 90 degrees of operation and small torque can be closed tightly.

Ball valves are mainly designed to conform API 6D (Specification for pipeline valves) or API 6A and ANSI B16.34 in case of upstream applications. There are various types of ball valves according to the different way of classification, they can be floating ball valve, trunnion mounted ball valve, fully welded ball valve, v-shaped ball valve, muti-ports ball valve and so on according to its structure; pneumatic ball valve, electric ball valve and manual ball valve according to the drive operator and other classification.