设计特点Design features
1、2PC铸钢、分体式、固定球
2PC Casting steel、split body、trunnion ball.
2、防吹出阀杆设计Blow-out proof stem
3、防火、静电结构Fire-proof and anti-static structure.
4、紧急注脂密封设计
Emergency grease seal design.
5、双阻断及排污功能（DBB）
Double block and bleed function.
标准规范Standard specification
设计标准Design:API 6D /GB/T 19672
标准级数Rating:CL150/PN16
面间距离Face to Face:API6D/GB/T19672
法兰标准Flange:ASME B16.5/ HG/T20592
试验标准Inspection:API 6D/ GB/T 19672
