Product Overview:
A42F spring fully enclosed closed 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. A42F spring fully enclosed closed safety valve for operating temperature ≤ 300 ℃ air, petroleum gas, liquid and other media equipment and piping. For working temperature ≤ 200 ℃ corrosive media equipment and piping, as overpressure protection device.
| product name | A42F spring fully enclosed closed safety valve |
| Product number | A42F |
| Nominal diameter | DN20-400 |
| Pressure range | 1.6MPa-10.0MPa |
| Body material | Cast steel, forged steel, stainless steel |
The main parts and materials:
| NO. | Part Name | A42Y-C / KA42Y-C material | A42Y-P / KA42Y-P material | A42Y-R material | DA42Y-P material |
| 1 | Seat | 2Cr13 / 1Cr18Ni9Ti | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti | ZG1Cr18Ni9Ti |
| 2 | Body | WCB | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti | LCB / ZG1Cr18Ni9Ti |
| 3 | Adjustment ring | 2Cr13 / 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 4 | Backlash plate | 2Cr13 / 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 5 | Disc | 2Cr13 / 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 6 | Guide sleeve | 2Cr13 / 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 7 | cap | ZG230-450 | ZG230-450 | ZG230-450 | ZG1Cr18Ni9Ti |
| 8 | spring | 50CrVA | 50CrVA coated fluoroplastic | 50CrVA coated fluoroplastic | 50CrVA |
| 9 | Valve stem | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 1Cr18Ni9Ti |
| 10 | Adjust the screw | 45 | 2Cr13 | 2Cr13 | 2Cr13 |
| 11 | Bonnet | ZG200-400 | ZG200-400 | ZG200-400 | ZG230-450 |
| 12 | Sealing surface material | Surfacing Co-based cemented carbide | |||
