G2 Gas Fitter Practice Exam 2026 - Free Gas Fitter Practice Questions and Study Guide

Question: 1 / 400

What is the role of a pressure regulator?

To increase pressure to flow smoothly

To control and maintain uniform outlet pressure

The role of a pressure regulator is primarily to control and maintain a uniform outlet pressure. This is essential for ensuring consistent performance of gas appliances and systems. A pressure regulator functions by adjusting the flow of gas to maintain a set output pressure, regardless of fluctuations in the input pressure from the supply source. This regulation helps protect downstream appliances and systems by preventing overpressure situations that could lead to safety hazards or operational inefficiencies.

In various applications, a stable outlet pressure allows for the proper operation of devices, achieving optimal combustion in appliances like furnaces or water heaters, which in turn enhances energy efficiency and safety. The ability to provide a steady pressure despite changes in the supply or demand makes pressure regulators a critical component of gas distribution systems.

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To vary the pressure according to external conditions

To decrease pressure at all times

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