Recreational Vehicle (RV) Technician Practice Test

An opened outage valve is used?

1. To indicate the amount of vapor

2. To monitor tank pressure

3. To indicate the maximum liquid level

4. To facilitate filling

The correct answer is: To indicate the maximum liquid level

An opened outage valve is primarily used to indicate the maximum liquid level within a tank. When the liquid reaches a certain level, it can flow out through this valve, which serves as a critical element in preventing overfilling. This is particularly important for safety and operational efficiency since overfilled tanks can lead to liquid escape, spillage, or other hazardous situations. Thus, the outage valve helps in maintaining proper levels in the tank, aligning with safety protocols. While the other options relate to different functionalities associated with tanks and valves, they do not accurately reflect the primary purpose of the outage valve. For instance, monitoring tank pressure or indicating vapor levels involves different mechanisms rather than relying on an outage valve's operation. Facilitating filling is also a distinct process that would utilize different types of valves or setups to ensure that the filling process is efficient and safe without spilling or overfilling.