Maxon 42256 Spark Ignitor

The Maxon 42256 Spark Ignitor is a heavy-duty industrial ignition component engineered specifically for high-performance Tube-O-Therm burners. Designed for reliability in demanding immersion-style heating applications, this OEM spark ignitor features a 1/2" NPT threaded connection and an overall length of 8.75 inches, ensuring precise fitment and consistent arc generation. As a critical failure point in many process heating systems, the 42256 igniter utilizes a durable ceramic insulator and a robust center wire to withstand the intense thermal cycles typical of 3-inch and 4-inch Tube-O-Therm EB series equipment.

For field technicians and mechanical contractors, this industrial burner spark plug serves as a direct replacement to maintain system uptime. The 1/4 inch long cemented center wire is optimized for rapid flame establishment, reducing startup delays and improving fuel efficiency. Whether you are performing routine maintenance on a commercial HVAC unit or a complex industrial process heater, utilizing genuine Maxon burner parts like the 42256 ensures compatibility with existing ignition modules and helps prevent common nuisance lockouts caused by carbon fouling or dielectric breakdown.

• Precision Compatibility: Specifically designed for Maxon Tube-O-Therm 3" and 4" series burners to ensure safe and efficient ignition.
• Industrial-Grade Construction: Built with high-temperature ceramics and durable ignition electrodes to provide long-term service in harsh environments.
• Ease of Installation: Standard 1/2" NPT thread size allows for straightforward integration into current burner assemblies without modifications.
• Reliable Arc Performance: Engineered to provide consistent spark energy for reliable combustion initiation in immersion-effective burners.

Is the Maxon 42256 compatible with all Maxon burners?
No, the 42256 is primarily designed for the Tube-O-Therm and Tube-O-Therm EB series. Always verify the specific part number in your burner's manual, as Maxon utilizes over a dozen different igniter configurations.

Does this igniter require a specific ignition cable?
This igniter is compatible with standard high-voltage ignition leads designed for industrial burners. Check for signs of brittleness or cracks in your existing lead when replacing the spark ignitor to ensure optimal performance.

How can I prevent premature fouling on the 42256 electrode?
Maintain proper fuel-to-air ratios and ensure the burner is operating within its specified pressure range. Excessive soot buildup can bridge the spark gap, leading to failed ignition cycles.

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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.