Recreational Vehicle (RV) Technician Practice Test

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Prepare for the RV Technician Test. Use flashcards and multiple-choice questions with hints and explanations. Ensure your success!

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What is the name of the device used to withdraw propane vapor from the tank's service valve?

Liquid withdrawal tube
Vapor withdraw tube
Pressure relief tube
Propane siphon

The correct answer is: Vapor withdraw tube

The device used to withdraw propane vapor from the tank's service valve is known as the vapor withdrawal tube. This component is specifically designed to allow the gas in vapor form to exit the propane tank for use in appliances, ensuring that the propane is drawn in a gaseous state. By utilizing this vapor withdrawal system, it effectively separates the vaporized propane from the liquid propane, preventing liquid propane from being drawn into the system, which could be hazardous and lead to equipment damage. The liquid withdrawal tube, while it may also be associated with propane tanks, is designed for drawing liquid propane rather than vapor. The pressure relief tube serves a completely different function related to safety, helping to release excess pressure within the tank to prevent overpressure situations. The term "propane siphon" is not typically used in the context of propane systems, and it may imply a method that is less controlled and not aligned with standard propane handling practices. Understanding these specific functions and terminologies is crucial for safe and effective RV maintenance and operation.