The ball valves and cock are the same kind of valve， but on the other hand the ball valve's open-close accessory is the ball with round hole， the ball rotates together with the pole to realize open and close valve.

One、The series of Fluoro plastic Lined ball valve：
The basic series of ballvalveisQ41F 46， it divides into two pieces and three pieces structure， it possesses the following advantages except that it possess the little flow resistance and rapid start and close， simple structure：
1.The FEP liner ball valve possess high chemicals tab ity and can be applied to any other serious erosive medium except the"fuse alkali metal and F"element.
2.It adopts full diameters， drift ball structure to make the valve zero-leaking close within the whole pressure scope， at the sametime it is used for the maintain for pipe way.
3.The combination of the open-close ball and pole of valve cast gets rid of the impacting endure per ss so to ensure the safety of ht use.
4.The compact and the reasonable structure and the smallest lumen room reduced the stay of the medium.In， addition the special mould pressure craft make the delicate of sealing surface perfect， and with the packing stuff PTFE to make the valve zero leakage.
5.Two and three pieces structure are applied to various kinds of pipe systems and work conditions， in that the three pieces ball valve allow the valve body to seperate with the two sides to realize the rapid exchange and maintain.

Two、criterion of design：
It follows the standard GB1237， API608.API6D

Three、way of drive：
Manual， worm-gear-driven， motor-driven and pneumatic-driven.