型号规格 A48Y/A42Y/A44Y
公称通径 25~400mm
压力范围 1.6~10.0MPa
A48Y-64/100弹簧全启式安全阀
A44Y-16/25/40/64/100C/P/R弹簧全启式安全阀
A48Y型弹簧全启式安全阀适用于工作温度≤350℃的蒸汽、空气等介质的设备和管路上。A44Y型弹簧全启式安全阀适用于工作温度≤300℃的空气、石油 等介质的设备和管路上，作为超压保护装置。产品连接法兰标准PN<6.4MPa按JB/和T-94系列1.2标准。PN≥6.4MPa按JB/和T-94系列2标准
主要零部件材料
| NO | 零件名称
Name of part | A48Y-C A44Y-C A42Y-C
材料 Materials | A44Y-P A42Y-P
材料 Materials | A44Y-R A42Y-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 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 |
外形及连接尺寸
A42Y-64/100C/P/R 弹簧全启式安全阀 外形尺寸图
公称通径
Nominal diameter DN(mm) | 尺寸 Dimensions (mm) |
| DO | L | L1 | DN’ |
| 25 | 15 | 110 | 105 | 32 |
| 32 | 20 | 130 | 110 | 40 |
| 40 | 25 | 135 | 120 | 50 |
| 50 | 32 | 160 | 130 | 65 |
| 80 | 50 | 175 | 160 | 100 |
| 100 | 65 | 220 | 200 | 125 |
| 150 | 100 | 285 | 260 | 200 |
公称压力
Nominal pressure PN(MPa) | 公称通知
Nominal diameter DN(mm) | 尺寸 Dimensions (mm) |
| L | L1 | DO | DN’ |
(A44Y)
1.6
2.5
4.0 | 25 | 110 | 95 | 15 | 32 |
| 32 | 115 | 100 | 20 | 40 |
| 40 | 120 | 110 | 25 | 50 |
| 50 | 135 | 120 | 32 | 65 |
| 65 | 160 | 135 | 40 | 80 |
| 80 | 170 | 135 | 50 | 100 |
| 100 | 195 | 175 | 65 | 125 |
| 150 | 255 | 230 | 100 | 175 |
(A44Y)
6.4
10.0 | 25 | 110 | 105 | 15 | 32 |
| 32 | 130 | 110 | 20 | 40 |
| 40 | 135 | 120 | 25 | 50 |
| 50 | 160 | 130 | 32 | 65 |
| 80 | 175 | 160 | 50 | 100 |
| 100 | 220 | 200 | 65 | 125 |
| 150 | 285 | 260 | 100 | 200 |