Pressure Class Asme 150 (20 Pn) Bonnet Type Closed BonnetIndustry Standard Asme B1634Orb Trim T3 Standard TrimBody Material Wcc Carbon SteelCore A-105 ForgingOverlay Nickel FaceStem Aisi 8620Seat Material 410 Stainless SteelSeat Insert TeflonFastener Grade Stud Grade B7 Fastener Grade Nut Grade 2HPacking Ring Materials Teflon Fire Safe Valve Operator HandwheelMinimum Temperature -20Maximum Temperature 500 Tempunits FRating Psi