What is the activation temperature range for an orange head sprinkler?

What is the activation temperature range for an orange head sprinkler?

• A. 350-450 F
• B. 450-500 F
• C. 500-575 F Ultra High
• D. 600-650 F

Answer: (C)

Sprinkler heads use color coding to indicate their activation temperature. An orange head is the Ultra High category, designed to activate when the surrounding temperature reaches about 500–575°F. The glass bulb inside the head is engineered to shatter at that temperature, allowing water to be discharged and fight the fire. The other temperature ranges listed don’t match the orange head’s color-code for activation, so they don’t represent the orange head’s rating.

Sprinkler heads use color coding to indicate their activation temperature. An orange head is the Ultra High category, designed to activate when the surrounding temperature reaches about 500–575°F. The glass bulb inside the head is engineered to shatter at that temperature, allowing water to be discharged and fight the fire. The other temperature ranges listed don’t match the orange head’s color-code for activation, so they don’t represent the orange head’s rating.