At what activation temperature does a green sprinkler bulb respond?

The response temperature for a green sprinkler bulb is specifically set at 79 °C (175 °F). This activation temperature is part of the design features that categorize sprinklers based on their thermal sensitivity and fire protection applications. The green bulb is often used in general wet pipe systems for ordinary hazard applications where a moderate temperature ceiling is anticipated.

Understanding the activation temperatures of different sprinkler bulb colors is crucial for ensuring the proper application and effectiveness of a fire protection system. Each color-coded bulb corresponds to different temperature ratings which align with the potential fire hazards present, thus ensuring that the sprinklers activate appropriately to suppress a fire effectively, while also taking into account the surrounding environment and risk levels.