Series 7A00 Rev B Stable Detonation Flame Arrestor Without Restriction, Concentric Version, ISO 16852 Certified; 6" End Conns, 12" Element, Explosion Group IIA; Max. Operating Pressure: 17.4 PSI Abs.; Max. Operating Temperature: =< 140 Deg. F; 1.4571 (SST) Element, 1.4581 (SST) Casing & Rim Material; Nbr Gasket Material; Housing Material 1.0619 Steel, ASME B16.5 150RF Flange Connection,;Two G-1/2" Ports On Each Side Of The Housing; 8.8 Zinc Plated Cap Screw Material; 1 X Temperature Sensor (Pt100) Ex Ib 3-Wire; Aluminum Name Plate / English Type; Adhesive Label Indicating Short Time Burn Proof Construction; Signal Blue (Ral5005) Surface Coating