Which sprinkler color uses an Orange/Red bulb?

• A. White
• B. Black
• C. Blue
• D. Green

Answer: (B)

Understanding sprinkler head temperature ratings and color coding is essential. The glass bulb inside a sprinkler head is colored to show the temperature at which it will rupture, and the head’s body color is standardized to match that rating. In this coding system, an orange/red bulb is paired with a black sprinkler body. So the black color is the one that uses an orange/red bulb, making it the best answer. The other head colors correspond to different bulb colors and ratings, so they wouldn’t be associated with an orange/red bulb.