Series 7C00 Detonation Flame Arrestor W/O Restriction, Concentric Version, USCG Certificate; 2" Line Size, D Explosion Group; Size 2”, Maximum Operating Pressure 17.4 psi (absolute), Maximum Operating Temperature ≤ 140°F; Stainless Steel Casing, Element, and Rim Material; FKM Gasket Material; Stainless Steel Housing Material With ASME 150 RF Flange Connection; Two ports G1/2" on each side Std. for all explosion groups and sizes; A2 Stainless Steel Cap Screw Material; Without Temperature Sensor; Stainless Steel Name Plate / English Type; No Paint (SST)