Recreational Vehicle (RV) Technician Practice Test

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What component reduces propane container pressure to 10 PSI?

Second stage of a regulator
First stage of a regulator
Relief valve
Pressure gauge

The correct answer is: First stage of a regulator

The component that reduces propane container pressure to 10 PSI is the first stage of a regulator. This stage is crucial because it takes the high pressure coming from the propane tank and lowers it to a more manageable level for the second stage of the regulator, which typically further reduces the pressure to a level suitable for use in appliances. The first stage ensures that the delivery pressure is consistent and safe, which is vital for the reliable operation of propane-powered systems in RVs. In the context of propane systems, the first stage regulator serves as the initial barrier for pressure regulation, providing a step-down from the tank’s high pressure. By maintaining the pressure at 10 PSI, it protects downstream components and ensures efficiency in the propane combustion process. Moreover, this initial reduction is essential for satisfying safety regulations and ensuring the equipment operates within its specified parameters.