Flowx pneumatic actuated 3-way stainless steel ball valves are available in a variety of body materials and with all of the common end connections.  The spring return actuator requires a pneumatic pilot signal to change the valve position, springs will return the valve to the normal failsafe position. Double acting air actuators use air pressure only to change the valve position. The bore through the ball (ball drilling) comes in two varieties, "L" and "T" as shown below.Advantages of air actuated ball valves over other type valves may include: higher flow rates, higher pressures, higher temperatures, wider media compatibility, straight through flow path, reduced water hammer, and use in hazardous environments.