| 系列 Series |
| A27H-10A27H-16A27H-25A27H-40A27Y-10PA27Y-16PA27Y-25PA27Y-40PA27Y-10RA27Y-16RA27Y-25RA27Y-40R |
| A27H型适用于工作温度≤200℃的水、空气、蒸气等介质的设备或管路上。A27Y适用于工作温度≤200℃有腐蚀性介质的设备或管路上，作为超压保护装置。 |
| A27H type are used for the equipment and pipeline of water, air, steam etc. medium what the working temperature areless than 200 . A27Y type are used for the equipment and pipeline of the quality with corrode me-dium what the workingtempe-rature are less than 200 . Take for extra pressure devices. |
| 主要零部件材料 Explanation of materials for main parts |
| NO. | Name of part | A27H Materials | A27W-P Materials | A27W-RMaterials |
| 1 | Body | HT350 | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti |
| 2 | Nozzle | 35 | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti |
| 3 | Adjusting ring | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 4 | Disc | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 5 | Spring | 50CrVA | 50CrVACoated Teflon | 50CrVACoated Teflon |
| 6 | Stem | 2Cr13 | 2Cr13 | 1Cr18Ni9Ti |
| 7 | Adjusting bolt | 45 | 2Cr13 | 1Cr18Ni9Ti |
| 8 | Cap | ZG200-400 | ZG200-400 | 1Cr18Ni9Ti |
| | Sealing surface of material | D507 Depositing D507 | CoDepositing stellite |
| 10 | Adjusting nut | Q235-A | 2Cr13 | 1Cr18Ni12Mo2Ti |
| | Sealing surface of material | "Y" CoDepositing stellite, "H" D507 Depositing D507, "W"body |
