What temperature does the bulb color green indicate?

The bulb color green is specifically indicative of a temperature rating of 175°F. This identification is based on the standard color coding system used in the sprinkler fitting industry, where each bulb color corresponds to a specific temperature at which the sprinkler will activate.

In the case of a green bulb, it is designed to activate at a moderate temperature, which makes it suitable for environments that may experience higher-than-normal heat but are not classified as high hazard. The identification of bulb colors helps sprinkler fitters and safety inspectors quickly determine the appropriate sprinkler heads for a given application, ensuring effective fire protection.

Understanding these temperature ratings is crucial for the proper selection and installation of fire protection systems, as different environments will require different response capabilities from sprinkler systems. Proper selection helps in achieving the most efficient control of fire hazards.