Recreational Vehicle (RV) Technician Practice Test

Question 3

What is the primary function of an excess flow valve when activated?

Regulates temperature Limits the flow of propane Increases pressure Shuts off the gas supply

Correct Answer:

Limits the flow of propane

Explanation:

An excess flow valve is a safety device in the propane system that activates when gas begins to flow faster than normal, such as in a damaged hose or line. Its primary job is to quickly limit the amount of propane that can pass through, reducing the risk of a large, dangerous leak or fire. It doesn’t regulate temperature or increase pressure, and while it may eventually shut off flow if the abnormal condition persists, the key function you’re testing is the ability to limit the flow to a safer rate.

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