What temperature is an ordinary sprinkler head rated at?

An ordinary sprinkler head is typically rated at 165 degrees Fahrenheit. This temperature rating indicates the specific threshold at which the sprinkler will activate to release water for fire suppression. In a fire situation, the heat from the flames will cause the air temperature around the sprinkler head to rise. When it reaches 165 degrees, the glass bulb or the fusible link in the sprinkler head melts or shatters, triggering the sprinkler system to activate.

This temperature is standard for most ordinary sprinkler heads, as it is effective in dealing with moderate heat conditions found in typical structural fires. The additional temperature ratings for sprinkler heads generally serve different applications or environments. For instance, lower ratings might be used in areas where increased sensitivity is necessary, while higher ratings could be used in spaces where higher temperatures are expected due to processes or materials present. Understanding the rated temperature of sprinkler heads is crucial for ensuring that they function properly in the event of a fire, providing effective fire protection in buildings.