The Model 6K00 Pressure / Vacuum Vent with built in Flame Arrestor protects a Storage Tank from normal inbreathing and outbreathing activity. The Flame Arrestor prevents fire from entering the storage tank by removing heat from the flame. The Model 6K00 is designed, manufactured and tested according to Directive 2014/34/EU (ATEX114) and ISO 16852 and meets or exceeds seat leakage acc. International Standards (ISO28300 and API2000).