A48Y safety relief valve is used for the equipment and pipeline of steam and air, with working temperature less than 350℃,A44Y is used for the equipment and pipeline of air and petroleum gas, with working temperature less than 300℃, as overpressure protect device.
Material
S.N. | Name | A48Y-C/ A44Y-C Material | A44Y--P Material | A44Y-R Material |
1 | Body | WCB | ZG1Cr18Ni9Ti | CF8M |
2 | Nozzle | 2Cr13 | 1Cr18Ni9Ti | 316 |
3 | Adjusting ring | ZG2Cr13 | ZG1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti |
4 | Disc holder | ZG2Cr13 | ZG1Cr18Ni9Ti | 316 |
5 | Disc | 2Cr13 | 1Cr18Ni9Ti | 316 |
6 | Guide sleeve | 2Cr13 | 1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti |
7 | Bonnet | ZG230-450 | ZG230-450 | ZG230-450 |
8 | Spring | 50CrVA | 50CrVA+PTFE | 50CrVA+PTFE |
9 | Stem | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
10 | Lever | ZG200-400 | ZG200-400 | ZG200-400 |
11 | Adjusting bolt | 45 | 2Cr13 | 2Cr13 |
12 | Cap | ZG200-400 | ZG200-400 | 316 |
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