... material304, 316, 316L, Hastelloy B-2, Hastelloy C-276Plug structureHS non-metal balanced sealing ringHS double seated total ... metal sealingLeakageClassClassClassWorking temp.°C-196~+566-5~+230-196~+566Illustration Body DN40, 50, 65, 80 ... CF8, CF8MUpper bonnetNormal temp. (P)-17~+230°CExtension I (EI)-45~-17°C, +230~+566°CExtension II (EII)-100~-45°CExtension ...