Which temperature range corresponds to an orange sprinkler head?

Which temperature range corresponds to an orange sprinkler head?

• A. 500-575°F
• B. 250-300°F
• C. 400-475°F
• D. 325-375°F

Answer: (A)

Sprites of the temperature rating on sprinkler heads are shown by color, so inspectors can quickly identify what heat level will trigger discharge. An orange sprinkler head means it’s a high-temperature rating: about 500–575°F. That higher range is chosen for areas that can experience high heat or radiant heat spikes, ensuring the head won’t release water under normal conditions but will respond if a severe fire drives temperatures into that upper range. In practice, this helps prevent nuisance discharge in spaces with heavy equipment or heat sources, while still providing protection when the ceiling temperature climbs to the orange-rated level. Other colors indicate other, typically lower, temperature ratings, so the orange color specifically signals the 500–575°F range.

Sprites of the temperature rating on sprinkler heads are shown by color, so inspectors can quickly identify what heat level will trigger discharge. An orange sprinkler head means it’s a high-temperature rating: about 500–575°F. That higher range is chosen for areas that can experience high heat or radiant heat spikes, ensuring the head won’t release water under normal conditions but will respond if a severe fire drives temperatures into that upper range. In practice, this helps prevent nuisance discharge in spaces with heavy equipment or heat sources, while still providing protection when the ceiling temperature climbs to the orange-rated level. Other colors indicate other, typically lower, temperature ratings, so the orange color specifically signals the 500–575°F range.