Which bulb color indicates a temperature of 325'F?

The bulb color that indicates a temperature of 325°F is purple. In the context of sprinkler systems and fire protection, thermal bulbs in sprinkler heads are color-coded to signify the temperature at which they will activate. Each color corresponds to a specific temperature threshold, allowing for quick identification and appropriate response to fire hazards.

For example, purple typically signifies a higher activation temperature compared to other colors, ensuring that the sprinkler system responds effectively to fires that occur at those elevated temperatures. This color-coding system is crucial for firefighters, engineers, and maintenance personnel to understand the properties of the sprinkler system they are working with, enhancing safety and effectiveness in fire suppression.

Understanding this system is essential for anyone involved in the installation or maintenance of sprinkler systems, as it ensures that they can select and maintain the right equipment for specific environments and hazards.