一、产品概述：
A42Y-160/320适用于工作温度≤200℃的空气、氮气混合气等介质的设备或管路上。A42Y-160P/320P、A42Y-160R/320R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。
二、主要零部件材料：
| NO. | 零部件名称 | A42Y-160 A42Y-320
材料 | A42Y-160P
A42Y-320P 材料 | A42Y-160R
A42Y-320R 材料 |
| 1 | 法兰 | 35/35CrMoA | 2Cr13 | 1Cr18Ni12Mo2Ti |
| 2 | 阀座 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 3 | 阀体 | 40 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 4 | 调节阀 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 5 | 阀瓣 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 6 | 反冲盘 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 7 | 导向套 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 8 | 阀盖 | ZG230-450 | ZG230-450 | ZG230-450 |
| 9 | 阀杆 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
| 10 | 弹簧 | 50CrVA | 50CrVA 包覆氟塑料 | 50CrVA包覆氟塑料 |
| 11 | 调整螺杆 | 45 | 2Cr13 | 2Cr13 |
| 12 | 阀帽 | ZG200-400 | ZG200-400 | ZG200-400 |
| 13 | 密封面材料 | 堆焊 Co 基硬质合金 |
三、标日牌A42Y-160/320型弹簧全启封闭式高压安全阀外形尺寸和连接尺寸：
| 型号 | 公称通径（DN） | do | d | M | K | D | Z-φd | b | d1 | M1 | K1 | D1 | Zrφd1 | b1 | L | L1 | ≈ H |
| A42Y-160 | 15 | 8 | 20 | M24×2 | 60 | 95 | 3-18 | 20 | 29 | M42×2 | 80 | 115 | 4-18 | 22 | 95 | 100 | 220 |
| 20 | 8 | 27 | M33×2 | 68 | 105 | 3-18 | 20 | 29 | M42×2 | 80 | 115 | 4-18 | 22 | 95 | 100 | 220 |
| 25 | 14 | 28 | M33×2 | 68 | 105 | 3-18 | 20 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 15 | 150 | 280 |
| 32 | 15 | 37 | M42×2 | 80 | 115 | 4-18 | 22 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 15 | 150 | 390 |
| 40 | 20 | 47 | M52×2 | 115 | 165 | 6-26 | 28 | 65 | M80×3 | 145 | 200 | 6-29 | 40 | 180 | 180 | 495 |
| 50 | 25 | 59 | M64×3 | 115 | 165 | 6-26 | 32 | 80 | M100×3 | 170 | 225 | 6-33 | 50 | 165 | 165 | 400 |
| A42Y-320 | 15 | 8 | 27 | M33×2 | 68 | 105 | 3-18 | 20 | 29 | M42×2 | 80 | 115 | 4-18 | 22 | 95 | 100 | 220 |
| 20 | 8 | 30 | M33×2 | 75 | 110 | 3-18 | 22 | 29 | M42×2 | 80 | 115 | 4-18 | 22 | 95 | 100 | 220 |
| 25 | 14 | 35 | M42×2 | 80 | 115 | 4-18 | 22 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 150 | 150 | 280 |
| 32 | 15 | 41 | M48×2 | 95 | 135 | 4-22 | 25 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 150 | 150 | 390 |
| 40 | 20 | 58 | M64×3 | 115 | 165 | 6-26 | 32 | 65 | M80×3 | 145 | 200 | 6-29 | 40 | 180 | 180 | 495 |
| 50 | 25 | 70 | M80×3 | 145 | 200 | 6-29 | 40 | 80 | M100×3 | 170 | 225 | 6-33 | 50 | 165 | 165 | 400 |
| A42Y-400 | 32 | 15 | 41 | M48×2 | 95 | 135 | 4-22 | 25 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 150 | 150 | 397 |
