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This orifice is a #40 drill size
The York S1-9951-0931 is a precision-engineered LP Gas Orifice designed for specific burner manifold applications in York
Always verify the CV rating and valve series on the nameplate before installation
For contractors performing maintenance on Carrier HVAC systems
and SNR/SNA/SBN
York S1-9951-0931 Orifice This orifice is a #40The York S1 9951 0931 is a precision engineered LP Gas Orifice designed for specific burner manifold applications in York, Luxaire, and Coleman furnace systems. This component features a #42 drill size with a verified . 0935 internal diameter, ensuring exact volumetric control of liquid propane flow to the burner assembly. As an OEM replacement part from Johnson Controls, it is manufactured from high grade brass to maintain dimensional stability and
