Resideo 390686-25 Orifice

The Resideo 390686-25 Orifice is a high-precision field replacement component engineered for LP gas pilot burners. This 0.012-inch liquid propane orifice is specifically designed to provide metered fuel flow and stable pilot flame production in critical ignition sequences. Stamped with the BBR12 identification code, this part ensures precise gas regulation and air-fuel mixing across a wide range of popular Resideo and Honeywell series. It is a direct functional equivalent to the 390686-25/U universal part number, allowing for seamless integration during system maintenance or gas type conversions. Maintaining the correct orifice sizing is paramount for safety and efficiency, as it prevents carbon buildup and ensures reliable thermocouple or thermopile heating. Built for professional-grade durability, this direct replacement orifice provides the exact specifications required by HVAC technicians to restore optimal manifold pressure performance in residential and commercial gas-fired appliances.

• Universal Series Compatibility: Engineered for use with Q314, Q345, Q373, Q379, Q382, Q3450, Q3451, and Q3452 pilot burner series.
• Precise Fuel Metering: Features a calibrated 0.012-inch diameter specifically for LP gas applications.
• Easy Identification: Clearly marked with the BBR12 stamp to prevent installation errors in the field.
• OEM Standards: Direct replacement for the 390686-25/U, ensuring exact physical fit and flow rate.

Is the 390686-25 suitable for natural gas systems?
No, this specific model is calibrated only for LP gas (Liquid Propane). Using this in a natural gas application will result in improper flame characteristics and potential safety hazards.

What is the difference between the 390686-25 and the 390686-25/U?
Technicians will find that the 'U' suffix denotes universal packaging, but the 390686-25 orifice is physically and technically identical in every specification, including the BBR12 stamp.

Can I use this orifice with a Q348U pilot burner?
While this orifice fits many Resideo Q-series pilot burners, always verify your specific pilot assembly's requirements, as the 0.012" sizing must match the burner head design for proper aeration.

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.