Series 6A00 Deflagration Flame Arrestor, Concentric Version, ISO 16852 Certified; 10" End Conns, 20" Element, Explosion Group IIA (D); Max. Operating Pressure: 17.4 PSI Abs.;Max Operating Temperature: '=< 140 Deg. F; 1.4571 (SST) Casing & Element Material, 1.4581 (SST) Rim Material; FKM Gasket Material; Housing Material Carbon Steel, ASME B16.5 150RF Flange Connection,;One G-1/2" Port On Each Side Of The Housing; 8.8 Zinc Plated Cap Screw Material; Without Temperature Sensor; Aluminum Name Plate / English Type; Signal Blue (Ral5005) Surface Coating