There is almost no pneumatic system that doesn’t have at least one ball valve to cut off the air, for safety reasons or to simply shut down the whole system for maintenance working. The ball valves are not only air suitable, their diversity making them compatible with the air, water, solvents, salted water, mud, grease, flammable substances installations.
They can be operated actuated, with simple or double pneumatic actuators, with electric actuator, or with reducer.