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Vacuum Negative pressure safety Valve
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Vacuum Negative pressure safety Valve
A72W Vacuum Negative pressure safety Valve is applicable in negative pressure system with temperature less than 200℃. When the negative pressure in the container exceeds the allowable value, the valves will open automatically and absorbs air; when the negative pressure the container reaches the allowable value, the valve will close automatically so as to protect the equipment and the systems. When the discharge valve of the container and system has not opened, which produces the negative pressure, this valve will open automatically
Material List:
| NO. | Parts Name | Material (A72W-P) |
Material (A72W-R) |
| 1 | Body | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti |
| 2 | Nozzle | 1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti |
| 3 | Adjusting Ring | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 4 | Bonnet | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti |
| 5 | Stem | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 6 | Spring | 50CrVA | 50CrVA Coated PTFE |
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