Product Overview:
A28H, A28Y spring-loaded safety valve for a variety of light and heavy industry and building pipelines. Safety valves are widely used in: chemical, petrochemical, petroleum, paper, mining, electricity, liquefied petroleum gas, food, pharmaceuticals, water supply and drainage, municipal services, machinery and equipment support, electronics industry, urban construction and other fields. A28H, A28Y spring all-purpose safety valve for operating temperature ≤ 200 ℃ air, steam, water, nitrogen and hydrogen mixture and other media equipment or piping, A28Y-P / 10R8 for operating temperature ≤ 200 ℃ corrosive Medium equipment or piping, as overpressure protection device.
| product name | A28H, A28Y spring full safety valve |
| Product number | A28H, A28Y |
| Nominal diameter | DN15-80mm |
| Pressure range | 1.6MPa-10.0MPa |
| Body material | Cast steel, forged steel, stainless steel |
The main parts and materials:
| NO. | Part Name | A28H material | A28Y-P material | A28Y-R8 material |
| 1 | Body | HT200 | ZG1Cr18Ni9Ti | CF8M |
| 2 | Seat | 35 | ZG1Cr18Ni9Ti | CF8M |
| 3 | Adjustment ring | 2Cr13 | 1Cr18Ni9Ti | 316 |
| 4 | Disc | 2Cr13 | 1Cr18Ni9Ti | 316 |
| 5 | spring | 50CrVA | 50CrVA coated fluoroplastic | 50CrVA coated fluoroplastic |
| 6 | Valve stem | 2Cr13 | 2Cr13 | 316 |
| 7 | Adjust the screw | 45 | 2Cr13 | 316 |
| 8 | Protective cover | ZG200-400 | ZG200-400 | CF8M |
| Sealing surface material | Surfacing D507 | Surfacing Co-based cemented carbide | ||
