Series 6B00 Deflagration Flame Arrestor, Eccentric Version, ISO 16852 Certified; 2" End Connections, 4" Element, Explosion Group IIA; Max. Operating Pressure: 16 PSI Absolute; Max. Operating Temperature: =< 140 Deg. F; 1.4571 (Stainless Steel) Element And Rim Material - No Casing; FKM Gasket Material; Housing Material 1.4581 Stainless Steel, ASME B16.5 150RF Flange Connection, One G-1/2" Port On One Side Of The Housing; A4 Stainless Steel Cap Screw Material; Without Temperature Sensor; Aluminum Name Plate / English Type; No Additional Surface Coating