| 系列 Series |
| A61H-160 A61Y-320 A61Y-160P A61Y-320P |
| A61-160，A61-320适用于工作温度≤200℃的空气、氨、石油气等介质的设备和管路上，A61Y-160P，A61Y-320P型适用于温度≤200℃有腐蚀性的气体或液体的设备和管路上，作为超压保护装置。 |
A61 -160, A61 -320 type are used for the equipment and pipeline of the air, ammonia, petr-oleum gas etc. medium what the working temperature are less than 200 , A61Y-160P , A61Y-320P type are used for the equipment and pi-
peline of the quality with corrode gas and liquid medium what the working temperature are lessthan 200 . Take for extra pressureprotection devices. |
| 主要零部件材料 Explanation of materials for main parts |
| NO. | Name of part | A61H-C A61Y-C Materials | A61Y-P Materials |
| 1 | Union | 20 | 1Cr18Ni9Ti |
| 2 | Union nut | 35 | 1Cr18Ni9Ti |
| 3 | Nozzle | 2Cr13 | 1Cr18Ni9Ti |
| 4 | Body | 35/35CrMoA | 1Cr18Ni9Ti |
| 5 | Disc | 2Cr13 | 1Cr18Ni9Ti |
| 6 | Guide | 2Cr13 | 1Cr18Ni9Ti |
| 7 | Spring | 50CrVA | 50CrVA Coated Teflon |
| 8 | Stem | 2Cr13 | 2Cr13 |
| 9 | Bonnet | ZG230-450 | 1Cr18Ni9Ti |
| 10 | Adjusting bolt | 45 | 2Cr13 |
| 11 | Cap | ZG200-400 | 1Cr18Ni9Ti |
| | Sealing surface of material | "Y" Co Depositing slite, "H" D507 Depositing D507 |
