螺纹弹簧全启式安全阀产品部分型号
A28H-10 A28Y-10P A28Y-10R8 A28Y-25R8 A28Y-40R8 A28H-16 A28Y-16P A28Y-16R8 A28Y-25R8 A28Y-40R8
螺纹弹簧全启式安全阀产品介绍
A28H型适用于工作温度≤200℃的空气、蒸汽、水、氮氢混合气等介质的设备或管路上，A28Y-P/10R8适用于工作温度≤200℃有腐蚀性介质的设备或管路上，作为超压保护装置。
A28H type are used for the equipment and pipeline of the air, N2, H2 mixed gas vapour etc.medium what the working temp-erature are less than 200 . A28Y-P/10R8 type are used for the equipment and pipeline of the quality with corrode medium what the working temperature are less than 200 . Take for extra pressure protedion devices.
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主要零部件材料 Explanation of materials for main parts
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| NO. | Name of part | A28H Materials | A28Y-P Materials | A28Y-R8 Materials |
| 1 | Body | HT200 | ZG1Cr18Ni9Ti | CF8M |
| 2 | Nozzle | 35 | ZG1Cr18Ni9Ti | CF8M |
| 3 | Adjusting ring | 2Cr13 | 1Cr18Ni9Ti | 316 |
| 4 | Disc | 2Cr13 | 1Cr18Ni9Ti | 316 |
| 5 | Spring | 50CrVA | 50CrVACoated Teflon | 50CrVACoated Teflon |
| 6 | Stem | 2Cr13 | 2Cr13 | 316 |
| 7 | Adjusting bolt | 45 | 2Cr13 | 316 |
| 8 | Cap | ZG200-400 | ZG200-400 | CF8M |
| Sealing surface of material |
D507 Depositing D507 |
Co Depositing stellite |
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| 10 | Adjusting nut | Q235-A | 2Cr13 | 1Cr18Ni12Mo2Ti |
| Sealing surface of material | "Y" CoDepositing stellite, "H" D507 Depositing D507, "W"body | |||
| 外形尺寸和连接尺寸 Dimensions (mm) | ||||||
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Nominal diameter DN (mm) |
Dimensions (mm) | |||||
| do | Rc | G | L | L1 | H | |
| 15 | 10 | 1/2" | 3/4" | 37 | 62 | 189 |
| 20 | 12 | 3/4" | 1" | 40 | 65 | 196 |
| 25 | 15 | 1" |
11/ " 4 |
45 | 72 | 277 |
| 32 | 20 | 11/ " | 1 | 55 | 85 | 312 |
| 40 | 25 | 11/ " | 2" | 67 | 100 | 322 |
| 50 | 32 | 2" |
21/ " 2 |
76 | 112 | 348 |
| 65 | 40 | 21/ " | 3" | 110 | 135 | 370 |
| 80 | 50 | 3" | 4" | 110 | 145 | 410 |
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