Honeywell 395390-13 Orifice

The Honeywell 395390-13 Orifice is a precision-engineered LP gas component specifically designed for use with Honeywell Q179 Series pilot burner assemblies. Featuring a strictly calibrated 0.013" diameter, this orifice is critical for maintaining the correct fuel-to-air ratio in propane-fueled commercial and industrial burners. Whether you are servicing a Q179A interrupted pilot or a Q179B continuous pilot system, this part ensures a stable flame signal for reliable rectification. In the field, it is important to note that the 395390-13 is technically identical to the 395390-13/U, meaning both part numbers serve as direct replacements without modification. For contractors performing a pilot burner orifice replacement, this component provides the exact flow rate required to prevent soot buildup or pilot outages in high-demand HVACR applications. Using an OEM Honeywell LP gas orifice ensures that the pilot flame remains consistent with the original equipment design, which is vital for the safety and efficiency of the entire combustion cycle.

• Precise Fuel Metering: The 0.013" orifice size is factory-set for optimal LP gas flow, ensuring a steady pilot flame.
• Broad Compatibility: Fully compatible with the Honeywell Q179 series, including A and B variants used in flame rectification pilots.
• Simplified Inventory: 100% interchangeable with part number 395390-13/U for easier stock management.
• Industrial Grading: Built to withstand the high-temperature environments typical of commercial burner assemblies.

What is the difference between the 395390-13 and the 395390-13/U?
There is no functional difference. The "/U" suffix denotes a "universally" packaged retail version, but the technical specs and 0.013" diameter are identical.

Can I use this orifice for Natural Gas applications?
No. This specific model is sized exclusively for LP gas (Propane). Natural gas applications typically require a larger orifice, such as the 0.028" diameter 395390-28.

Which pilot assemblies use the 395390-13 orifice?
It is standard for the Honeywell Q179A and Q179B pilot burners that require a 0.013" LP gas input to prove the flame signal.

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.