What does the color code 'Orange' indicate about temperature in sprinkler systems?

In sprinkler systems, the color code 'Orange' indicates an 'Ultra High' temperature rating. This classification is essential because sprinkler head performance and activation are dependent on the surrounding temperature conditions. The orange color signifies that the sprinkler head is designed to operate at higher temperature thresholds, typically above 135°F (57°C) and up to about 150°F (65.5°C).

Understanding these color codes is crucial for selecting the appropriate sprinkler heads based on the specific environmental conditions they will be exposed to. Sprinkler fitters need to ensure that the correct type of sprinkler head is installed in areas where higher temperatures may be a concern, such as industrial settings or areas with heat-generating equipment. Thus, the color coding helps in the identification and selection process for optimal fire protection performance.