Spring Low Lift High Pressure Safety Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
A41H-64
A47H-100
Applications
A41H-type spring low lift high pressure safety valve is suitable for equipments and pipes of air, oil, water and other media that operating temperature is ≤ 300 ℃; A47-type spring low lift high pressure safety valve is suitable for operating temperature ≤ 350 ℃ steam, air, water equipments and pipes. When the equipment and pipe internal pressure exceed the allowable value, A41H spring low lift pressure safety valve will automatically open, then with the whole amount of emissions; when the pressure is reduced to the set value, A41H-type spring low lift pressure safety valve will automatically shut down to ensure the safe operation of equipments and pipelines.
Dimensions & constructral diagram
A41H-64 constructral diagram
A47H-100 constructral diagram
External and connection dimensions
| Nominal diameter DN(mm) | Dimensions(mm) | |||
| do | L | L1 | DN’ | |
| 25 | 20 | 100 | 100 | 25 |
| 32 | 25 | 115 | 105 | 32 |
| 40 | 32 | 135 | 120 | 40 |
| 50 | 40 | 160 | 130 | 50 |
| 65 | 50 | 175 | 160 | 65 |
| 80 | 65 | 175 | 160 | 80 |
| 100 | 80 | 190 | 180 | 100 |
| 150 | 100 | 220 | 210 | 125 |
The materials of main parts
| No. | Part name | A47H A41Y-160 A41Y-320 Materials | A41Y-160P A41Y-320P Materials | A41Y-160R A41Y-320R Materials |
| 1 | Flange | 35/35CrMoA | 2Cr13 | 1Cr18Ni9Ti |
| 2 | Seat | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 3 | Body | 35/40 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 4 | Disc | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 5 | Guide sleeve | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 6 | Spring | 50CrVA | 50CrVA packed with fluoroplastic | 50CrVA packed with fluoroplastic |
| 7 | Stem | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 8 | Bonnet | ZG230-450 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
| 9 | Adjusting bolt | 45 | 2Cr13 | 2Cr13 |
| 10 | Cap | ZG200-400 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
| Sealing surface of seat and disc | bead weld Co-based hard alloy | |||
