Pneumatic devices use the power of compressed air (air that has been squashed tightly into a space) to make something move. The compressed air or gas can be used to move motors, cylinders or other ...

A pneumatic controller at an oil field off Hwy. 34 east of Greeley, Colorado, on Feb. 24, 2021. The little bursts of natural gas may not seem like much, but researchers and environmental groups ...