USPS 955 Postal Supervisor Exam 2025 – 400 Free Practice Questions to Pass the Exam

The pressure-relief valve is typically located after the compressor in a pneumatic system. This positioning is crucial because it allows the valve to monitor and regulate the pressure of the compressed air as it flows out of the compressor. By doing so, it helps to prevent pressure buildup that could lead to equipment damage or failure. The pressure-relief valve ensures that if the system pressure exceeds the safe operating limits, it will open to release excess pressure, thereby protecting downstream components and enhancing overall system safety.

When positioned after the compressor, the valve can effectively manage the air pressure that is being distributed throughout the entire system. This prevents downstream components from operating under dangerous pressure conditions, which could lead to malfunction or hazards.

The other options represent locations where a pressure-relief valve would not be effectively fulfilling its safety function. For example, placing it before the compressor would not allow it to control the pressure of the air that is already compressed. Similarly, positioning it in the actuator or within the reservoir would not provide the necessary protection for the overall system pressure management, since these areas would not give a comprehensive view of the system’s operational pressure.