Each component has its own specific symbol. These can be used to design and communicate the layout of a pneumatic circuit. Here are some examples of the most common pneumatic components.

A pneumatic circuit is made up of an input, process, and output. Pneumatics are used in everyday life for example compressed air is used for airbrushes, dentist drills, lorry breaks and bicycle pumps.

The diagram may serve, for example, to improve the interface coordination between a designer of pneumatic circuits, or may simply provide a symbolic functional system description to a plant manager.