Sizes Forged 0.5" to 2" (15mm to 50mm) Cast Steel 2" to 48"(50m to 1200mm) Pressure Class Forged #150, #300, #600, #800, #900, #1500, #2500 Cast Steel #150, #300, #600, #900, #1500, #2500 Construction DetailsDesign Forged Two Piece & Three Piece Cast Steel One Piece, Two Piece, Three Piece, Top Entry, Trunnion, Block & Bleed Design Design Standard Forged BS EN ISO 7292 API 6D API 608 Cast Steel BS EN ISO 7292 API 6D API