设计制造 Design and manufacture: JB/T
结构长度 structural length: GB/T
法兰连接 Flange connection: GB/T9 JB/T79-94
试验与验收 testing and acceptance:GB/T13927-92
主要零部件材质 Key parts material
阀体、上盖Valve body, upper cap 碳钢、不锈钢Carbon steel, stainless steel
阀板Valve plate 不锈钢stainless steel
阀杆Stem 不锈钢stainless steel
密封圈Seal ring 橡胶、四氟、不锈钢、硬质合金Rubber, PTFE, stainless steel,hard alloy