压缩空气气用安全阀A42Y-16C于工作温度≤300℃空气、石油气、液体等介质的设备和管路上。A42Y-P型及A42Y-R型适用于工作温度≤200℃有腐蚀性的介质的设备和管路上，作为超压保护装置。
系列型号
| A42Y-16C | A42Y-16P | A42Y-16R |
| KA42Y-16 | DA42Y-16C/P | A42Y-25 |
| A42Y-25P | A42Y-25R | KA42Y-25（P） |
| DA42Y-25P | A42Y-40 | A42Y-40P |
| A42Y-40R | KA42Y-40 | DA42Y-40P |
| A42Y-64 | A42Y-64P | A42Y-64R |
| KA42Y-64 | DA42Y-64P | A42Y-100 |
| A42Y-100 | PA42Y-100R | KA42Y-100 |
| DA42Y-100P |
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主要零件材料
| NO. | 零件名称 | A42Y-C/KA42Y-C材料 | A42Y-P/KA42Y-P材料 | A42Y-R材料 | DA42Y-P材料 |
| 1 | 阀座 | 2Cr13/1Cr18Ni9Ti | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti | ZG1Cr18Ni9Ti |
| 2 | 阀体 | WCB | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti | LCB/ZG1Cr18Ni9Ti |
| 3 | 调节圈 | 2Cr13/1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 4 | 反冲盘 | 2Cr13/1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 5 | 阀瓣 | 2Cr13/1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 6 | 导向套 | 2Cr13/1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 7 | 阀盖 | ZG230-450 | ZG230-450 | ZG230-450 | ZG1Cr18Ni9Ti |
| 8 | 弹簧 | 50CrVA | 50CrVA包覆氟塑料 | 50CrVA包覆氟塑料 | 50CrVA |
| 9 | 阀杆 | 2Cr13 | 1Cr18Ni9Ti/1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti/1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 10 | 调整螺杆 | 45 | 2Cr13 | 2Cr13 | 2Cr13 |
| 11 | 阀帽 | ZG200-400 | ZG200-400 | ZG200-400 | ZG230-450 |
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| 密封面材料 | 堆焊Co基硬质合金 | |||
