Reznor 84853 Burner Orifice #47

The Reznor 84853 Burner Orifice measures the flow of gas to supply the correct amount of fuel for efficient burner operation. Designed with a #47 orifice size, it regulates gas passing through the burner inlet before mixing with combustion air to establish the intended flame features. It threads into the designated burner connection and aligns with the fuel delivery path during installation or servicing in HVAC systems. Precise fuel regulation leads to consistent combustion, supports uniform heat output, and maintains stable heating performance throughout normal operating cycles.