MORRISON DN50 (2") Vacuum Pressure Vent - 4oz/sq.in c/w Flame Arrester 748A.

Flame arresters provide a positive barrier that keeps flames from passing through the normal vent line into a storage tank’s vapor space. FEATURES: Directs vapors outward and upward in accordance with NFPA 30. Protects the vent line from debris and insects. Water resistant rain cap...