蝶形弹簧式安全阀（A42Y-A62Y）用途
A42Y/A62Y蝶形弹簧式安全阀适用于火力发电厂（站）蒸汽介质设备和管路上，作为超压保护装置。当设备和管路内压力超过允许值时，阀门自动开启，全量排放；当压力降到规定值时，阀门自动快速关闭，保证设备和管路安全、有效运行。
| 蝶形弹簧式安全阀（A42Y-A62Y）主要性能规范 | ||||||
| Type | Nominal pressure | Test pressure Ps（MPa） | Working pressure p（MPa） | Working temperature | 试验温度 Test | |
| Seal | Strength | |||||
| A62Y-P54100V | 10 | 11 | 15 | 10 | 540 | 常温 |
| A62Y-P31112 | 11.2 | 12.4 | 16.8 | 11.2 | 318 | |
| A62Y-P55140V | 14 | 15.4 | 21 | 14 | 555 | |
| A42Y-P55170V | 17 | 18.7 | 25.5 | 17 | 555 | |
| A42Y-P5526V | 2.6 | 2.9 | 3.9 | 2.6 | 555 | |
| A42Y-P4545 | 4.5 | 5 | 6.8 | 4.5 | 450 | |
| A42Y-P3326.5 | 2.7 | 3 | 4.1 | 2.7 | 330 | |
| 蝶形弹簧式安全阀（A42Y-A62Y）主要零部件材料 |
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| 零件名称 Name of part | 阀体 Body | 阀盖 Bonnet | 阀杆 Stem | 蝶形弹簧 Butterfly soring |
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| A62Y-P54100 | ZG15Cr1Mo1V | ZG25 | 38CrMoA1A | 60Si2MnA |
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| A62Y-P31112V | ZG25 I |
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| A62Y-P55140V，A62Y-P55170V，A42Y-P5526V | ZG15Cr1Mo1V | 20Cr1Mo1V1 |
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| A42Y-P4545，A42Y-P3326.5 | ZG25 I |
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| 蝶形弹簧式安全阀（A42Y-A62Y）外形尺寸和连接尺寸 | |||||||||||||||
| Type | Diameter | Dimensions（mm） | |||||||||||||
| Do | D | D1 | D2 | D3 | D6 | b | Z- d | H1 | H2 | ||||||
| A62Y-P54100V | 70/80 | 70 | - | - | 88 | 150 | - | - | - | 1,575 | 347 | ||||
| A62Y-P31112 | 70/80 | 70 | - | - | 88 | 150 | - | - | - | 1,575 | 347 | ||||
| A62Y-P55140V | 70/80 | 70 | - | - | 89 | 170 | - | - | - | 1,644 | 375 | ||||
| A42Y-P55170V | 75/100 | 75 | - | - | 100 | 190 | - | - | - | 1,705 | 380 | ||||
| A42Y-P5526V | 110/150 | 110 | 350 | 290 | - | - | 204 | 46 | 12-34 | 2,067 | 480 | ||||
| A42Y-P4545 | 110/150 | 110 | 350 | 290 | - | - | 204 | 46 | 12-34 | 2,070 | 480 | ||||
| A42Y-P3326.5 | 110/150 | 110 | 350 | 290 | - | - | 204 | 46 | 12-34 | 2,067 | 480 | ||||
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