To ensure wet sprinkler systems have adequate pressure. 

15.3.1. Scheduling

To be scheduled with the licensed professional performing the monthly inspection before the heating season. 

15.3.2. Inspection

The fire sprinkler mechanism called a inspector’s test valve (ITV) is triggered to simulate an actual fire scenario. Reaction time is measured to guarantee the system responds as designed. The main drain test evaluates the condition of the water supply.