Fine small pneumatic three O-type ball by a pneumatic piston actuator and ball valve components. Changing the relative position of the ball core and pipes, control can be implemented in various combinations of the three pipeline fluids. The product is powered by compressed air source, receiving the switching signal control system, reversing through the solenoid valve, operating valve according to the requirements of the line switch. T-piece can make a three-way interconnecting piping that is orthogonal to divert traffic (merging) role, but also enables communication and cut off two of another conduit pipe. L-type links can only communicate with each other perpendicular to the two pipelines or switching direction, that is, from a distribution function. Way ball valve according to the mode of action points single and double acting in two ways. Features single action is the power source in the event of failure, the ball will be in the state control system requirements.