用途
A42Y型彈簧全啟式安全閥適用于工作溫度≤300℃的空氣、石油氣、液體等介質(zhì)的設備和管路上。A42-P型及A42Y-R型彈簧全啟式安全閥適于工作溫度≤200℃有腐蝕性的介質(zhì)的設備和管路上。A48Y型彈簧全啟式安全閥適于工作溫度≤350℃的蒸氣、空氣等介質(zhì)設備和管路上，作為超壓保護裝置。
外形及連接尺寸
| 公稱通 Nominal diameter DN(mm) | 尺寸 Dimensions (mm) | |||
| DO | L | L1 | DN’ | |
| 25 | 15 | 110 | 95 | 32 |
| 32 | 20 | 115 | 100 | 40 |
| 40 | 25 | 120 | 110 | 50 |
| 50 | 32 | 165 | 120 | 65 |
| 65 | 40 | 160 | 135 | 80 |
| 80 | 50 | 170 | 135 | 100 |
| 100 | 65 | 195 | 175 | 125 |
| 125 | 80 | 210 | 190 | 150 |
| 150 | 100 | 255 | 230 | 175 |
| 200 | 125 | 300 | 260 | 250 |
| 250 | 150 | 350 | 320 | 300 |
| 300 | 200 | 380 | 350 | 400 |
| 350 | 300 | 500 | 450 | 500 |
| 400 | 350 | 500 | 450 | 500 |
主要零部件材料
| NO. | 零件名稱 Name of part | A42Y-C A48Y-C KA42Y-C 材料 Materials | A42Y-P/K A42Y-P 材料 Materials | A42Y-R 材料 Materials | DA42Y-P 材料 Materials |
| 1 | 閥座 Nozzle | 2Cr13/1Cr18Ni9Ti | ZG1Cr18Ni9Ti | 2G1Cr18Ni12Mo2Ti | ZG1Cr18Ni9Ti |
| 2 | 閥體 Body | WCB | ZG1Cr18Ni9Ti | 2G1Cr18Ni12Mo2Ti | LCB/ ZG1Cr18Ni9Ti |
| 3 | 調(diào)節(jié)圈 Adjusting ring | 2Cr13/1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 4 | 反沖盤 Disc holder | 2Cr13/1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 5 | 閥瓣 Disc | 2Cr13/1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 6 | 導向套 Guide sleeve | 2Cr13/1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 7 | 閥蓋 Bonnet | ZG230-450 | ZG230-450 | ZG230-450 | ZG1Cr18Ni9Ti |
| 8 | 彈簧Spring | 50CrVA | 50CrVA包覆氟塑料 Coated Teflon | 50CrVA包覆氟塑料 Coated Teflon | 50CrVA |
| 9 | 閥桿Stem | 2Cr13 | 1Cr18Ni9Ti/1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti/1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 10 | 調(diào)整螺桿Adjusting bolt | 45 | 2Cr13 | 2Cr13 | 2Cr13 |
| 11 | 閥帽Cap | ZG200-400 | ZG200-400 | ZG200-400 | ZG230-450 |
| 密封面材料 Sealing surface of material | 堆焊Co基硬質(zhì)合金 Depositing stellite | ||||
