What is the temperature rating for Black color coded sprinkler systems?

• A. 175 - 225
• B. 135 - 170
• C. 250 - 300
• D. 325 - 375

Answer: (B)

Sprinkler temperature ratings are shown by color coding so you can quickly identify the heat at which a head will activate. For the black color, the standard rating is 135 to 170 degrees Fahrenheit (about 57 to 77 degrees Celsius). This means the sprinkler is designed to release water when ambient heat falls within that range, making it suitable for environments where a mid-range temperature rating is appropriate. Other colors map to different rating ranges, but black specifically corresponds to this 135–170°F window, which is why that option is the best answer.