What temperature corresponds to the activation of an orange sprinkler bulb?

The activation temperature for an orange sprinkler bulb is indeed 57 °C. This is significant because the color coding of sprinkler bulbs is standardized to indicate the temperature at which the bulb will activate. In this case, the orange bulb is specifically designed for use in environments where this activation temperature is appropriate for the hazards present.

Understanding these specific temperature ratings is crucial for ensuring that sprinkler systems respond appropriately to fire conditions. Choosing the correct bulb color and temperature rating helps in providing an effective fire protection measure tailored to different types of buildings or applications. The other temperatures listed correspond to other colors of sprinkler bulbs, each designed for different hazard levels, emphasizing the importance of correct selection in sprinkler system design and installation.