Series 6A00 Deflagration Flame Arrestor, Concentric Version, ISO 16852 Certified; 3" Line Size, 6" Element, Explosion Group IIA (D); Maximum Operating Pressure: 17.4 PSI absolute, Maximum Operating Temperature: =< 140F; 1.4571 (Stainlesss Steel) Element And Rim Material - No Casing; FKM Gasket Material; Housing Material 1.4581 Stainless Steel, ASME 150 RF Flanged End Connections, Two G-1/2" Ports On One Side Of The Housing; A4 Stainless Steel Cap Screw Material; Without Temperature Sensor; Aluminum Name Plate / English Type; No Additional Surface Coating