High temperature and high-pressure safety valve applications
These safety valves are used for the equipment and pipeline of steam, etc. medium what the working temperature with C Type are less than 425℃ and I type are than 500℃ and V Type are than 550℃. Take for extra pressure protection de-vices.
High temperature and high-pressure safety valve brief figure of structure

High temperature and high-pressure safety valve dimensions (mm)
| Nominal Diameter DN (mm) |
Dimensions (mm) | |||
| d0 | L | L1 | DN’ | |
| 40 | 25 | 135 | 120 | 50 |
| 50 | 32 | 160 | 130 | 65 |
| 80 | 50 | 175 | 160 | 100 |
| 100 | 65 | 220 | 200 | 125 |
| 150 | 100 | 285 | 260 | 200 |
| 200 | 125 | 350 | 320 | 250 |
High temperature and high-pressure safety valve materials for main parts
| No. | Name of part | Materials | Materials | Materials |
| 1 | Body | WCB | ZG1Cr5Mo | ZG15Cr1Mo1V |
| 2 | Nozzle | 2Cr13 | 1Cr18Ni9Ti | 12Cr1MoVA |
| 3 | Adjusting ring | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
| 4 | Disc | 2Cr13 | 17-4PH | 17-7PH |
| 5 | Guide sleeve | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
| 6 | Radiator | ZG230-450 | ZG230-450 | ZG230-450 |
| 7 | Bonnet | ZG230-450 | ZG230-450 | ZG230-450 |
| 8 | Spring | 50CrVA | 50CrVA | 50CrVA |