Series 7A00 Stable Detonation Flame Arrestor, W/O Restriction, Concentric Version, ISO 16852 Certified; 10" End Connections, 20" Element, Explosion Group IIA; Maximum Operating Pressure: 16 PSI ABS., Maximum Operating Temperature: =< 140 Deg. F; 1.4571 (SST) Casing, Element, 1.4581 (SST) Rim Material; FKM/FEP Seamless Covered Gasket Material; Carbon Steel (1.0619), Sizes 1-1/4" Thru 8"; Two G-1/2" Ports On Each Side Of The Housing; 8.8 Zinc Plated Cap Screw Material; Without Temperature Sensor; Aluminum Name Plate / English Type; No Paint (CS-ZINC Or SST); Signal Blue (RAL5005) Surface Coating