Reznor 40416 Orifice

For service technicians maintaining Reznor unit heaters, the Reznor 40416 #57 Orifice is a critical OEM component for precise gas modulation and combustion safety. This #57 brass orifice plug is engineered specifically for propane (LP) gas conversion and manifold tuning, providing the exact flow diameter required to meet factory BTU specifications. When performing a Reznor gas conversion or replacing a fouled burner orifice, using a genuine Reznor 40416 ensures that the manifold pressure translates into a stable flame pattern without the risks of over-firing or incomplete combustion. Designed for heavy-duty HVAC applications, this replacement HVAC orifice withstands the high thermal stresses of the burner assembly, maintaining its internal diameter tolerances over long-term operation. Proper installation by a qualified contractor involves unthreading the existing manifold port and seating the 40416-REZNOR component without the use of thread sealant, ensuring a clear flow path and optimal heating efficiency for RPV, SC, and XE series units.

• Precision Flow Control: Specifically calibrated as a #57 drill size for accurate propane fuel delivery and efficient burner performance.
• Durable Brass Construction: Machined from high-quality brass to resist corrosion and thermal degradation in high-heat manifold environments.
• OEM Compatibility: A direct-fit Reznor replacement part ensures seamless integration with gas manifolds on indirect-fired and direct-fired models.
• Combustion Safety: Maintains the factory-specified air-to-fuel ratio, preventing carbon monoxide buildup and soot accumulation.

Is the Reznor 40416 compatible with natural gas systems?
No, this specific #57 orifice is sized for propane (LP) applications. Natural gas conversions typically require different drill sizes to accommodate lower pressure and higher flow requirements.

Can I drill out an existing orifice to match the #57 specification?
Field-drilling is not recommended. For safety and performance, always use an OEM 40416 orifice to ensure the internal geometry and flow characteristics meet manufacturer standards.

What models use the Reznor 40416 orifice?
This part is commonly found in Reznor RPV, SC, SCA, and XE series heaters, particularly those configured for LP gas or high-altitude operation. Always verify the unit's rating plate for the correct drill size.

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.