Final answer:
The purpose of a gas regulator at a gas burning appliance is to control the flow of gas to the appliance.
Step-by-step explanation:
The purpose of a gas regulator at a gas burning appliance is to control the flow of gas to the appliance.
Gas regulators are used to limit the pressure of the gas coming from the source so that it can be safely used in the appliance.
They ensure a steady and controlled flow of gas, preventing any potential hazards.