Middle and low pressure lifting check valve
Lifting check valve is a kind of check valve, its role is to prevent the medium in the pipeline flow back Choose different materials, can be respectively suitable for water, steam, oil, nitric acid, acetic acid and other media
Application
Lifting check valve is a kind of check valve, its role is to prevent the medium in the pipeline flow back. Check valve belongs to the automatic valve class, medium reflux by the disc block and play a role in preventing backflow, in order to prevent accidents. Choose different materials, can be respectively suitable for water, steam, oil, nitric acid, acetic acid and other media.
Characteristic
• The shell is formed by casting or die forging process;
• Disc is the only moving part, compact and reliable;
• Hardfacing of valve disc and seat sealing surface, high temperature resistance, tight and reliable sealing;
• Can use welding end and various pipe flange standards and flange sealing face types to meet various engineering needs and user requirements;
• A complete variety of valve body materials, gaskets can be reasonably selected according to the actual working conditions or user requirements, can be applied to a variety of pressure, temperature and medium conditions
Design Guides
| Design and manufacture | Structure length | Flange connection size | Inspection and test | Pressure and temperature reference |
| GB/T 12224 | GB/T 12221 | GB/T9124.1、GB/T9124.2 JB/T79、HG/20592 | GB/T 26480 | GB/T 12224 |
| NB/T 47044、B/T7746 | GB/T 12221 | NB/T 47044 | NB/T 47044/ GB/T 12224 | |
| ASME B16.34 | ASME B16.10 | ASME B16.5、 HG/20615 | ASME B16.34 | ASME B16.34 |
Product Range
| Nominal pressure | PN16～PN100（Class150—Class600） | |
| Nominal size | DN50～DN250（NPS 2～NPS10） | |
| Body matenal | Casting：WCB、WC6、WC9、ZG20CrMoV、CF8、CF3、CF8M、CF3M Forging：A105、F22.CL3、F304、F304L、F316、F316L |
|
| Test pressure(MPa) | Strength test (Water pressure) | 1.5×P(38℃ pressure rating) |
| Sealing test (Water pressure) | 1.1×P(38℃ pressure rating) | |
| Applicable Temperature | -29℃～570℃ | |
| Applicable medium | Steam, water, oil, etc | |
Note：
1、The valve beyond the above specifications can be customized according to user requirements;
2、The applicable temperature range of each valve shall be subject to the actual pressure bearing material of the valve.