York S1-9951-1541 Natural Gas Burner Orifice #23 0.154"

The York S1-9951-1541 Natural Gas Burner Orifice #23 is a metering insert component used to control fuel delivery into burner ports. It is machined with a precise 0.0154-inch opening that determines gas volume entering each burner section to maintain balanced combustion output. It is applied in HVAC systems within gas heating equipment where multiple burners require equalized fuel distribution. It is positioned at the burner inlet and works as a flow restriction point to maintain steady ignition and a consistent flame pattern across the burner manifold during heating operation.