Series 6A00 Deflagration Flame Arrestor, Concentric Version, ISO 16852 Certified; 8" End Conns, 16" Element, Explosion Group IIA1 (D1); Max. Operating Pressure: 23.2 PSI Abs;Max. Operating Temperature: '=< 140 Deg. F; 1.4571 (SST) Element & Rim Material - No Casing; FKM/FEP Seamless Covered Gasket Material; Housing Material 1.4581 SST, ASME B16.5 150RF Flange Connection,;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