Burner Orifice

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The burner orifice is a small, precisely-sized opening or nozzle in a gas-fired HVAC system, such as a furnace or boiler. Its primary purpose is to control the flow of natural gas or propane as it passes from the gas supply line into the burner assembly. Once the gas flows through the orifice, it combines with air in the mixing chamber to create the proper air-to-fuel ratio for combustion. This process ensures efficient burning of the gas to produce heat.

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