What is the maximum temperature that a clay flue liner must withstand without cracking?

The maximum temperature that a clay flue liner must withstand without cracking is 1,800 degrees Fahrenheit. Clay flue liners are designed to handle the high temperatures typically produced in flue gases, especially from combustion appliances. If the temperature exceeds the material's tolerance, structural integrity can be compromised, leading to cracking.

Understanding this temperature limit is crucial for ensuring safety and efficiency in gas systems, as exceeding it can result in significant issues, such as gas leaks or flue gas migration, which pose serious hazards. Therefore, knowing that 1,800 degrees Fahrenheit is the appropriate threshold allows installers and inspectors to maintain compliance with safety standards, supporting proper operation of venting systems in residential and commercial settings.