What is the maximum operating pressure for an Extra Hazard Group 2 sprinkler?

The maximum operating pressure for an Extra Hazard Group 2 sprinkler is indeed 175 psi. This specification is important because Extra Hazard sprinklers are designed for areas that have a higher potential for fire and require a more robust system to effectively control or suppress fires.

The 175 psi limit is based on stringent design criteria tailored to the needs of environments classified as Extra Hazard, which can include industrial facilities or storage areas with flammable materials. The pressure rating is selected to ensure that the sprinkler system can deliver adequate water flow and coverage necessary to combat more intense fires typical of such settings.

Understanding the operating pressures of different groups of sprinklers is crucial for ensuring that fire suppression systems meet code requirements and function effectively under real-life conditions.