Red Seal Steamfitter/Pipefitter Practice Exam

What is the primary purpose of a pressure relief valve in a system?

1. To increase system pressure

2. To prevent system overload and maintain safety

3. To enhance flow efficiency

4. To control temperature variations

The correct answer is: To prevent system overload and maintain safety

The primary purpose of a pressure relief valve in a system is to prevent system overload and maintain safety. These valves are designed to automatically open when the pressure in a system exceeds a predetermined set point, thereby allowing excess fluid to escape. This function helps to protect equipment and personnel from the dangers associated with excessive pressure, such as ruptures or explosions. By releasing pressure, the valve maintains the system within safe operating limits, ensuring reliable and controlled functioning. While increasing system pressure, enhancing flow efficiency, and controlling temperature variations are important aspects of system operation, they do not relate directly to the primary function of a pressure relief valve. This valve is specifically focused on safety and pressure management, making it an essential component in preventing catastrophic failures in pressurized systems.