Series 6E00 Deflagration Flame Arrestor, End-Of-Line Version, ISO 16852 Certified; 2" End Conns, 4" Element, Explosion Group IIB3 (C); Max. Operating Pressure: 16 PSI Abs.;Max. Operating Temperature: '=< 140 Deg. F; 1.4571 (SST) Element & Rim Material - No Casing; Stainless Steel (1.4571) Hood; Housing Material 1.4581 SST, ASME B16.5 150RF Flange Connection, No Port On Housing; A4 SST Cap Screw Material; Stainless Steel Name Plate / English Type; No Additional SuRFace Coating