Description:
| 主要零件材料 Main part material | | 主安全阀 Main safety valve | 件号
Part number | 零件名称
Name of parts | 材料
Material | | 1 | 下阀体 Nether Body | 铬钼钒钢CrMoV steel | | 2 | 阀 瓣Disc | 铬钼钒钢CrMoV steel | | 3 | 阀 座Seat | 铬钼钒钢CrMoV steel | | 4 | Upper Body | 铬钼钒钢CrMoV steel | | 5 | 阀 杆Stem | 铬钼钒钢CrMoV steel | | 6 | 活 塞Piston | 不锈钢Stainless steel | | 7 | 阀 盖Bonnet | 铬钼钒钢CrMoV steel | | 重量（kg） Weight | 403 | |
