Series 7A00 Rev B Stable Detonation Flame Arrestor Without Restriction, Concentric Version, ISO 16852 Certified; 1/2" End Conns, 1-1/2" Element, Explosion Group IIC; Max. Operating Pressure: 16 PSI Abs; Max. Operating Temperature: =< 302 Deg. F; 1.4571 (SST) Element & Rim Material - No Casing; Fkm Gasket Material; Housing Material 1.4581 SST, Npt Connection,;No Ports On Housing; Without Temperature Sensor; Aluminum Name Plate / English Type; No Paint (Cs-Zinc Or SST); No Additional Surface Coating