York S1-9951-0961 Orifice

Ensuring proper combustion in York furnace LP conversion projects requires precise fuel delivery, which is exactly why the S1-9951-0961 is engineered with a specific .096" drill size. This #41 gas orifice is a critical recovery component for York, Luxaire, and Coleman units when transitioning from natural gas to liquid propane. Unlike generic alternatives, this OEM replacement offers the exact threading and flow rate needed to maintain the correct HVAC gas manifold pressure, preventing issues like soot accumulation or delayed ignition. As a veteran technician knows, even a slight deviation in the propane orifice size can lead to inefficient burn cycles or excessive heat exchanger stress. Each brass component is precision-machined for high-heat durability and consistent gas velocity. When performing a field conversion or replacing a clogged jet, utilizing this original specification ensures the burner assembly operates within the manufacturer’s design parameters for safe heat output in residential atmospheric or power-vented furnace models.

• Precision Machined: The .096" diameter provides consistent fuel flow for optimal BTU output.
• OEM Compatibility: Direct fit for York, Coleman, and Luxaire manifold assemblies.
• LP Specific: Designed exclusively for liquid propane applications to ensure a clean, blue-flame burn.
• Durable Brass Construction: Resists corrosion and thermal expansion during high-cycle furnace operation.

Common Questions

What furnace brands are compatible with the S1-9951-0961?
This part is a standard replacement for most York-branded equipment, including those sold under the Coleman and Luxaire labels that require a #41 orifice for LP gas.

Can I use this orifice for natural gas applications?
No, this orifice is sized specifically for the higher energy density and pressure requirements of liquid propane. Using it with natural gas will result in an underfired burner and poor performance.

How do I verify if I need a #41 size orifice?
Orifice sizing is determined by the altitude and the BTU rating of the individual burner. Always refer to the specific unit’s LP conversion kit instructions to confirm if .096" is the required diameter.

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.