| 系列 Series |
| A48Y-16C A48Y-25 A48Y-40 A48Y-64 A48Y-100 A44Y-16C A44Y-25 A44Y-40 A44Y-64 A44Y-100 A44Y-16P A44Y-25P A44Y-40P A44Y-64P A44Y-100P A44Y-16R A44Y-25R A44Y-40R A44Y-64R A44Y-100R |
| A48Y型适用于工作温度≤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、石油等介质的设备或管路上，作为超压保护装置。连接法兰标准PN<6.4mpa<>按JB/T-94系例1。PN≥6.4MPa按JB/T-94系列2标准。 |
| A48Y type are usedfor the equipment and pipeline of the with steam and air etc medium what the working temperature are less than 350 . A44Y type are used for the equi-pment and pipeline of the with air and petroleum gas medium what the working temperature are less than 300 , Take for extra pre-ssure protection devices. Flange connecting dimensions of comply with Standard series first of JB/T-94 when the pressure less than 6.4MPa, comply with Standard series two of JB/T-94 when more than 6.4MPa. |
| 主要零部件材料 Materials for main parts |
| NO. | 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 | CF8M |
| 2 | 阀 座Nozzle | 2Cr13 | 1Cr18Ni9Ti | 316 |
| 3 | 调 节 圈 Adjusting ring | ZG2Cr13 | ZG1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti |
| 4 | 反 冲 盘 Disc holder | ZG2Cr13 | ZG1Cr18Ni9Ti | 316 |
| 5 | 阀 瓣Disc | 2Cr13 | 1Cr18Ni9Ti | 316 |
| 6 | 导 向 套Guide sleeve | 2Cr13 | 1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti |
| 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 | 1Cr18Ni12Mo2Ti |
| 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 stellite |
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