What is pneumatic energy?

Pneumatic energy refers to power related to pressurized air, which could either be static or moving. Most industrial machines utilize pneumatic energy and  have at least one  pneumatic energy source. Oftentimes, industrial equipment converts this energy into other forms of energy such as potential and kinetic energy for it to be useful.

How many turns of the handle does it take to open or close a ball valve?

What are pneumatic lockout valves?