Description:
| 性能规范 Performance criterion | Nominal pressure
（MPa） | Nominal diameter
（mm） | （MPa） Test pressure | | Max. working pressure
（MPa） | Max. working trmperature | Weight （kg） | | | | Strength | Seal | | | | | 10.0 | 150 | 15.0 | 4.0 | 4.0 | 450
540 | 202 | 主要零件材料 Main part material | 主安全阀 Main safety valve | Name of parts
Material | 1 | 2 | 3 | 4 | 5 | 6 | 7 | | Body | Disc | Stem | Seat | Spring | Bonnet | Piston | | A49Y-10 | Carbon steel | Carbon steel | Nitriding steel | Carbon steel | Spring steel | Carbon steel | Stainless steel | | A49Y-10V | CrMoV
steel | CrMoV
steel | Nitriding steel | CrMoV
steel | Spring steel | CrMoV
steel | Stainless steel | |
