York S1-9951-1801 180" Orifice SZ15

The York S1-9951-1801 Orifice Drill Size 0.180" DIA Sz15 is a precision gas flow component used to regulate fuel delivery within burner assemblies of heating supplies. It operates by providing a controlled opening that meters the amount of gas entering the combustion chamber, maintaining a proper fuel-to-air ratio for stable ignition and efficient flame. It is set up in furnaces, unit heaters, and commercial HVAC systems where accurate gas calibration is required. In maintaining combustion stability, and contributes to safe and efficient heating performance during regular operating cycles.