带扳手弹簧全启式安全阀适用范围
A48Y型安全阀适用于工作温度≤350℃的蒸汽、空气等介质的设备和管路上，A44Y适用于工作温度≤300℃的空气、石油等介质的设备和管路上作为超压保护装置，连接法兰标准按PN<6.4MPa按JB/T-94系列1标准,PN≥6.4MPa按JB/T-94系列2标准。
带扳手弹簧全启式安全阀产品型号 Type of the products
| A48Y-16C | A44Y-16C | A44Y-16P | A44Y-16R |
| A48Y-25 | A44Y-25 | A44Y-25P | A44Y-25R |
| A48Y-40 | A44Y-40 | A44Y-40P | A44Y-40R |
| A48Y-64 | A44Y-64 | A44Y-64P | A44Y-64R |
| A48Y-100 | A44Y-100 | A44Y-100P | A44Y-100R |
带扳手弹簧全启式安全阀主要零部件材料 Meterial for main parts
| 序号No. | 零件名称 Name of part | A48Y-C A44Y-C材料 Materials | A44Y-P 材料 Materials | A44Y- R 材料 Materials |
| 1 | 阀体 Body | WCB | ZG1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 2 | 阀座 Nozzle | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 3 | 调节圈 Adjusting ring | ZG2Cr13 | ZG1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 4 | 反冲盘 Disc holde | ZG2Cr13 | ZG1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 5 | 阀瓣 Disc | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 6 | 导向套 Guide sleeve | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 7 | 阀盖 Bonnet | ZG230-450 | ZG230-450 | ZG230-450 |
| 8 | 弹簧 Spring | 50CrVA | 50CrVA包覆氟塑料 Coated Teflon | 50CrVA包覆氟塑料 Coated Teflon |
| 9 | 阀杆 Stem | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
| 10 | 扳手 Lever | ZG200-400 | ZG200-400 | ZG200-400 |
| 11 | 调整螺杆 Adjusting bolt | 45 | 2Cr13 | 2Cr13 |
| 12 | 保护罩 Cap | ZG200-400 | ZG200-400 | 316 |
| | 密封面材料 Sealing surface of material | 堆焊Co基硬质合金Depositing slite |
