G2 Gas Fitter Practice Exam

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Prepare for the G2 Gas Fitter Test. Study using flashcards and multiple choice questions, with hints and detailed explanations for each question. Ensure your success!

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How many inches of water column are equivalent to one psi pressure?

The correct answer is: 28"

One psi (pound per square inch) is equivalent to 27.7 inches of water column, which is often approximated as 28 inches in many contexts. This conversion is essential knowledge for gas fitters as it allows them to understand and interpret pressure readings accurately when switching between different pressure measurement units. The reason this approximation is used is that the density of water at standard conditions is utilized to define these measurements. When discussing gas pressures, particularly in residential and commercial applications, the concept of inches of water column is commonly employed, making it crucial for professionals in the field to be familiar with these conversions. Understanding this conversion helps gas fitters ensure that their systems are operating within the appropriate pressure range, which is vital for safety and performance.