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Selection of Temperature rating for ordinary hazard (57°C to 77°C)?

Question asked by ashikpn on Sep 20, 2017
Latest reply on Sep 23, 2017 by nocivus

As per NFPA 13, Table Temperature range for ordinary hazard is between 57°C to 77°C. What is the criteria to select between 57°C and 68°C sprinkler temperature rating for ordinary hazard?