Recreational Vehicle (RV) Technician Practice Test

What role does a relief valve play in a gas system?

1. Increase pressure

2. Release excess pressure

3. Measure gas flow

4. Control temperature

The correct answer is: Release excess pressure

A relief valve is a crucial component in a gas system, specifically designed to maintain safety and prevent potential hazards associated with over-pressurization. Its primary function is to release excess pressure that builds up within the system, ensuring that the pressure remains within safe operational limits. By doing so, the relief valve protects the integrity of the system, prevents potential rupture or failure of pipes and equipment, and reduces the risk of accidents, such as explosions or fires. The other options suggest functions that are not associated with a relief valve. Increasing pressure, measuring gas flow, and controlling temperature are handled by different components within the gas system, such as regulators, flow meters, and thermostats. Thus, the role of the relief valve is distinctly focused on pressure management.