Air Venting for Wet Pipe Sprinkler Systems – NFPA 13 (2016), Sections 7.1.5 and 8.16.6 (adopted via MN State Fire Code 2020).

Listen up, apprentice — you just finished filling a big wet system, and the inspector’s eyeballing the high points. One wrong move on air venting, and you’re chasing corrosion leaks for years or failing acceptance. Today we’re breaking down the exact rule that changed in 2016: that single air vent every wet metallic system needs. In the field, it saves headaches; on the exam, it’s a guaranteed point if you know the details cold.