What term describes the component that regulates airflow in a pneumatic system?

The term that describes the component responsible for regulating airflow in a pneumatic system is valves. Valves play a critical role in controlling the flow and pressure of air within the system, allowing for precise adjustments to be made. They can either allow or block the air passage, ensuring that the necessary amount of airflow reaches various components as needed for the operation of tools and machinery.

In pneumatic systems, valves can be either manual or automated and come in various types, such as directional control valves, flow control valves, and pressure relief valves. These functionalities make valves essential for maintaining the desired air pressure and movement within the system.

While compressors generate the compressed air required for the system and controllers manage system operations based on inputs and desired outcomes, neither of these components specifically regulates the airflow in the same direct manner as valves do. Filters are important for removing contaminants from the air stream but do not influence the flow rate or pressure directly. Therefore, the role of valves in managing airflow makes them the correct answer in this context.