Material of Construction:Piping - ASTM A106 Gr. BFlanges - ASTM A105 WNRFCover - ASTM A105 BLRFStud - ASTM A193 Gr B7MNut - ASTM A194 Gr 2HMGasket - Asbestos FreeFilter Element Paper (5 micron nominal)Drain & Vent - SS Ball Valve with PTFE seatsOther - Carbon SteelSpecificationsGross Filtration Area 1000 timesPressure drop clean (Max) 0.5 bar