Recreational Vehicle (RV) Technician Practice Test

What is the pressure inside a propane container at sea level after purging?

1. 7.5 psi

2. 14.7 psi

3. 30 psi

4. 22 psi

The correct answer is: 14.7 psi

The pressure inside a propane container at sea level after purging is a critical safety aspect to understand. When purging a propane tank, the goal is to remove any air or contaminants that might be present. At sea level, the atmospheric pressure is generally about 14.7 psi. After purging, the propane inside the container is in a gaseous state, and it reaches equilibrium with the atmospheric pressure. This means that the pressure of the gas in the tank aligns with the atmospheric pressure, resulting in approximately 14.7 psi inside the container. This understanding is essential for technicians, as it aids in ensuring safe handling, accurate measurements, and maintenance practices for propane systems. Reacting to changes in pressure measurements can also influence the overall performance and safety of propane appliances and systems.