What is a common application of a regulator in pneumatic systems?

In pneumatic systems, a regulator is primarily used to mitigate air pressure fluctuations. Regulators function by maintaining a consistent output pressure despite variations in the input pressure or changes in the demand for airflow. This is essential for ensuring that pneumatic tools and systems operate efficiently and safely, as many pneumatic devices are designed to work within a specific pressure range. By stabilizing pressure, the regulator allows for reliable operation, improves performance, and extends the lifespan of connected equipment.

The other options do not accurately describe the primary function of a regulator. Adjusting airflow direction is typically managed by valves, while cooling air before use might involve additional equipment such as coolers or dryers. Storing compressed air is the function of air receivers or storage tanks, not regulators.