NV Automatic Fire Sprinklers Practice Questions - Nevada C-41A Automatic Fire Sprinklers Contractor Examination Exam

Water fills the piping; each closed sprinkler opens independently when heated Pressurized air fills the piping; only the fused sprinkler discharges A double-interlock preaction valve waits for both detection and a fused sprinkler before filling closed piping The sprinklers are open, and water is held at a deluge valve that opens on detection so every sprinkler discharges together