York S1-029-20423-042 Natural Gas Burner Orifice #42

The York S1-029-20423-042 Natural Gas Burner Orifice is a gas flow regulation component designed for fuel delivery control in HVAC systems. This burner orifice is used in compatible heating equipment to meter and direct natural gas into the burner assembly during furnace operation. Identified as a 42 frame orifice, the component is installed within the burner section where it supports proper gas distribution and combustion features required for system operation. It operates as part of the fuel and ignition assembly inside residential or commercial heating equipment.