York S1-9951-0931 Orifice

The 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 resist corrosion during high-temperature combustion cycles. For HVAC contractors, utilizing this York furnace orifice replacement is critical when performing gas conversions or replacing clogged spuds to ensure the manifold pressure aligns with the unit’s nameplate BTU rating. The .0935 gas orifice threading is machined to tight tolerances for a leak-free seal without the need for excessive torque. Reliable flame rectification and efficient heat exchange depend on the precise replacement gas orifice geometry found in this factory-authorized component.

• OEM Specification: Maintains the original factory engineering standards for gas delivery and combustion safety.
• Precise Calibration: The #42 drill size provides the exact flow rate required for LP gas configurations in Johnson Controls HVAC parts.
• Durable Brass Construction: Resists thermal expansion and mechanical wear, ensuring the orifice diameter remains constant over time.
• Direct Fitment: Designed for immediate installation into standard burner spuds across various York and Coleman furnace models.

What gas type is the York S1-9951-0931 designed for?
This orifice is specifically calibrated for Liquid Propane (LP) gas applications and should not be used for Natural Gas systems due to the specific flow requirements of higher-density propane.

What is the physical size of this orifice?
The part features a #42 drill size, which translates to a precise .0935-inch diameter opening for gas passage.

Can this be used on Luxaire or Coleman furnaces?
Yes, as these brands are under the Johnson Controls umbrella, this part is compatible with various models across those brands that specify the S1-9951-0931 part number.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.