York S1-029-21182-255 Orifice

Precision fuel regulation is essential for maintaining manifold pressure and burner efficiency in gas-fired heating systems. This York S1-029-21182-255 Orifice is a factory-engineered #55 burner spud used across several residential furnace and heating unit platforms, including the York DGAF100CD and specific YS1 and YB2 gas valve assemblies. As an OEM component, it ensures the exact BTU input required for safe combustion, preventing issues like over-firing or incomplete combustion that often lead to heat exchanger fatigue or soot accumulation. This #55 burner orifice replacement features high-tolerance brass machining and a standard 1/8 inch NPT thread for a drop-in fit. Whether you are performing a furnace gas orifice replacement or matching specs for a York burner component, using the correct numeric sizing is non-negotiable for flame stability and long-term reliability. Replace worn or obstructed orifices to restore factory-specified performance and ensure your equipment meets its rated AFUE efficiency during the heating season.

• OEM Precision: Specifically calibrated as a #55 size to regulate gas flow for consistent furnace burner performance.
• Durable Brass Construction: Machined for high-heat resistance and corrosion-free operation within the burner manifold.
• Simplified Compatibility: Direct replacement for York S1-029-21182-255, eliminating the need for field modifications.
• Optimized Combustion: Helps maintain a stable blue flame and reduces the risk of hazardous CO production due to incorrect air-fuel ratios.

How do I know if I need a #55 orifice for my York furnace?
Always verify the size stamped on the side of your existing spud or consult the manufacturer’s data plate. The #55 orifice is a common specification for certain 100,000 BTU models and high-altitude conversion kits where the gas input must be precisely limited.

Can this orifice be used for LP (Propane) conversions?
Orifice sizing is gas-type specific. While this is a standard York replacement part, ensure that a #55 size matches your specific conversion chart for the gas type and altitude of your job site.

What is the thread size for this York burner spud?
The York S1-029-21182-255 typically utilizes a 1/8 inch NPT connection, allowing for a secure, leak-proof fit into the burner manifold with standard technician tools like a nut driver or deep-well socket.

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.