Series 6A00 Deflagration Flame Arrestor, Concentric Version, ISO 16852 Certified; 3" Line Size, 6" Element, Explosion Group IIB3 (C); Maximum Operating Pressure: 17.4 PSI absolute, Maximum Operating Temperature: =< 140F; 1.4571 Stainless Steel Casing And Element Material, 1.4581 Stainless Steel Rim Material; EPDM Gasket Material; Housing Material 1.4581 Stainless Steel, PN10 RF Flanged End Connections, Two G-1/2" Ports On Each Side Of The Housing; A4 Stainless Steel Cap Screw Material; Without Temperature Sensor; Aluminum Name Plate / English Type; Signal Blue (RAL 5005) Surface Coating