Which component prevents pressure from exceeding manufacturer recommendations in an air compressor?

The pressure relief valve is the component designed specifically to prevent pressure from exceeding the manufacturer's recommendations in an air compressor. It serves as a critical safety feature that automatically releases excess pressure when it reaches a predetermined level, thereby protecting the integrity of the compressor and its components. If pressure builds up beyond safe limits, the valve opens to allow air to escape, effectively maintaining operational safety and preventing potential damage or catastrophic failure.

While the pressure gauge is an important instrument for monitoring the current pressure within the system, it does not control or regulate pressure. Instead, it provides a readout to operators, allowing them to observe the pressure levels and make informed decisions based on that data. However, it lacks the functionality to intervene if the pressure reaches unsafe levels.

The low oil level indicator switch and the cooling system also play vital roles in the operation of the compressor but do not relate to pressure regulation. The low oil level indicator alerts operators to issues with lubrication, while the cooling system helps manage the operating temperature of the compressor, ensuring it functions efficiently and prevents overheating. Neither of these functions pertains to managing pressure limits, reinforcing the essential role of the pressure relief valve in maintaining safe operation.