SFA48Y高温高压安全阀适用于工作温度“C型”≤425℃；“I型”≤500℃；“V型”≤500℃；的蒸汽等介质设备或管路上，作为超压保护装置。连接法兰标准按JB/T……94系列1、系列2。
SFA48Y高温高压安全阀(电站用)主要零部件材料
NO. | 零件名称 | C型材料 | I型材料 | V型材料 |
1 | 阀体 | WCB | ZG1Cr5Mo | ZG15Cr1Mo1V |
2 | 阀座 | 2Cr13 | 1Cr18Ni9Ti | 12Cr1MoVA |
3 | 调节圈 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
4 | 阀瓣 | 2Cr13 | 17-4PH | 17-7PH |
5 | 导向套 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
6 | 散热器 | ZG230-450 | ZG230-450 | ZG230-450 |
7 | 阀盖 | ZG230-450 | ZG230-450 | ZG230-450 |
8 | 弹簧 | 50CrVA | 50CrVA | 50CrVA |
■外形尺寸和连接尺寸
型号 | 公称 | do | D | K | g | g1 | b | f | f1 | Z-?d | DN\' | D1 | K1 | g3 | g2 | b1 | f\' | f1\' | z1-?d1 | L | L1 | ≈H |
SFA48Y-16C | 40 | 25 | 150 | 110 |
| 85 | 18 | 3 |
| 4-18 | 50 | 165 | 125 |
| 100 | 20 | 3 |
| 4-18 | 120 | 115 | 540 |
50 | 32 | 165 | 125 |
| 100 | 20 | 3 |
| 4-18 | 65 | 185 | 145 |
| 120 | 20 | 3 |
| 4-18 | 135 | 120 | 618 | |
65 | 40 | 185 | 145 |
| 120 | 20 | 3 |
| 4-18 | 80 | 200 | 160 |
| 135 | 20 | 3 |
| 8-18 | 160 | 140 | 710 | |
80 | 50 | 200 | 160 |
| 135 | 20 | 3 |
| 8-18 | 100 | 220 | 180 |
| 155 | 22 | 3 |
| 8-18 | 160 | 150 | 730 | |
100 | 65 | 220 | 180 |
| 155 | 20 | 3 |
| 8-18 | 150 | 285 | 240 |
| 210 | 24 | 3 |
| 8-23 | 225 | 175 | 892 | |
150 | 100 | 285 | 240 |
| 210 | 24 | 3 |
| 8-23 | 200 | 340 | 295 |
| 265 | 26 | 3 |
| 12-23 | 240 | 235 | 1135 | |
200 | 125 | 340 | 295 |
| 265 | 26 | 3 |
| 12-23 | 250 | 405 | 355 |
| 320 | 30 | 3 |
| 12-26 | 290 | 210 | 1135 | |
SFA48Y-40 | 25 | 16 | 115 | 85 | 58 | 65 | 16 | 2 | 4 | 4-14 | 32 | 140 | 100 |
| 78 | 18 | 2 |
| 4-18 | 110 | 95 | 429 |
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