Features body and bonnet to ensure, Are phosphated maximum resistance from rust. Bolted yoke-style bonnet design, Exterior screw rising stem. Screwed feminine connectors to bspt / npt / socket welded to ansi b16. 11. Specification details segment namematerialspecificationbodyforged carbon steelastm a 105body ASTM-certified stainless steel seat ring a 276 Stainless steel disc, Grade 410 as per ASTM standards a model 276 variant 410stemstainless steelastm a type 410 276 / astm a 182 specification gr. F6acheck stainless steel nuts conforming to ASTM A276 specifications 410gasketspiral wound s. S. Type 304/316 graphite filledbonnetforged carbon steelastm a 105bonnet nutalloy ASTM A194 steel specification gr. 2hstudalloy ASTM A193 steel specification gr. B7gland packingnon asbestos graphite with corrosion inhibitorglandstainless ASTM A276 stainless steel type 410