彈簧全啟封閉式高壓安全閥適用范圍
A42Y-160/320型彈簧全啟封閉式高壓安全閥適用于工作溫度≤200℃的空氣、氮氫混合氣等介質的設備或管路上 ，A42Y-160P/P、A42Y-160R/320R型彈簧全啟封閉式高壓安全閥適用于工作溫度≤200℃有腐蝕性介質的設備或管路上，作為超壓保護裝置，連接法蘭按JB/T2769-92的標準。
彈簧全啟封閉式高壓安全閥產品型號
| A42Y-160 | A42Y-160P | A42Y-160R |
| A42Y-320 | A42Y-320P | A42Y-320R |
彈簧全啟封閉式高壓安全閥主要零部件材料 Meterial for main parts
| 序號 NO. | 零件名稱 Name of part | A42Y-160 A42Y-320 材料Materials | A42Y-160P A42Y-320P 材料Materials | A42Y-160R A42Y-320 R材料Materials |
| 1 | 法蘭 Flange | 35/35CrMoA | 2Cr13 | 1Cr18Ni12Mo2Ti |
| 2 | 閥座 Nozzle | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 3 | 閥體 Body | 40 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 4 | 調節圈 Adjusting ring | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 5 | 閥瓣 Disc | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 6 | 反沖盤 Disc holder | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 7 | 導向套 Guide sleeve | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 8 | 閥蓋 Bonnet | ZG230-450 | ZG230-450 | ZG230-450 |
| 9 | 閥桿 Stem | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
| 10 | 彈簧 Spring | 50CrVA | 50CrVA/包覆氟塑料 Coated Teflon | 50CrVA/包覆氟塑料 Coated Teflon |
| 11 | 調整螺桿 Adjusting bolt | 45 | 2Cr13 | 2Cr13 |
| 12 | 閥帽 Cap | ZG200-400 | ZG200-400 | ZG200-400 |
| | 密封面材料 Sealing surface of material | 堆焊Co基硬質合金 Depositing site |
彈簧全啟封閉式高壓安全閥主要連接尺寸（mm）Size of main connection
| 公稱通徑 DN Nominal Diameter | 尺寸（mm）Size |
| d0 | d | M | K | D | Z-￠d | b | d1 | M1 | k1 | D1 | Z1-￠d1 | 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 | 150 | 150 | 280 |
| 32 | 15 | 37 | M42＊2 | 80 | 115 | 4-￠18 | 22 | 50 | M64＊3 | 115 | 165 | 6-￠26 | 32 | 150 | 150 | 390 |
| 40 | 20 | 47 | M52＊2 | 115 | 165 | 6-￠26 | 28 | 65 | M80＊3 | 145 | 200 | 6-￠29 | 40 | 165 | 165 | 400 |
| 50 | 25 | 59 | M64＊3 | 115 | 165 | 6-￠26 | 32 | 80 | M100＊3 | 170 | 225 | 6-￠33 | 50 | 180 | 180 | 495 |
| 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 | 165 | 165 | 400 |
| 50 | 25 | 70 | M80＊3 | 145 | 200 | 6-￠29 | 40 | 80 | M100＊3 | 170 | 225 | 6-￠33 | 50 | 180 | 180 | 495 |
| A42Y-400 |
| 32 | 15 | 41 | M48＊2 | 95 | 135 | 4-￠22 | 25 | 50 | M64＊3 | 115 | 165 | 6-￠26 | 32 | 150 | 150 | 397 |
