Which value is commonly associated with Ordinary sprinkler head temperature?

Which value is commonly associated with Ordinary sprinkler head temperature?

• A. 135 to 170 F
• B. 125 to 165 F
• C. 140 to 200 F
• D. 100 to 150 F

Answer: (A)

Sprinkler head temperature ratings specify the ambient temperature at which the head activates. Ordinary sprinklers are rated in a range around 135 to 170 °F, which is the temperature at which the heat-sensitive element (like a glass bulb or fusible link) will release water. This range fits typical room temperatures while staying sensitive enough to respond to a fire. The other ranges don’t match the standard Ordinary category: they correspond to different temperature classifications or extend beyond the ordinary window. So the commonly associated value for Ordinary sprinkler head temperature is 135 to 170 °F.

Sprinkler head temperature ratings specify the ambient temperature at which the head activates. Ordinary sprinklers are rated in a range around 135 to 170 °F, which is the temperature at which the heat-sensitive element (like a glass bulb or fusible link) will release water. This range fits typical room temperatures while staying sensitive enough to respond to a fire. The other ranges don’t match the standard Ordinary category: they correspond to different temperature classifications or extend beyond the ordinary window. So the commonly associated value for Ordinary sprinkler head temperature is 135 to 170 °F.