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Middle and low pressure swing check valve
Swing 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
Application
Swing 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 forging process;
• The pin shaft and the valve disc are connected with built-in structure, there is no leakage point, more reliable use;
• 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;
• Valve body material, gasket can be reasonably selected according to actual 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/T12224 | GB/T 12221 | GB/T9124.1、GB/T9124.2 JB/T79、HG/20592 | GB/T 26480 | GB/T 12224 |
| NB/T 47044 | GB/T 12221 | NB/T 47044 | NB/T 47044 | |
| 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 | DN10～DN1000（NPS 3/8～NPS 40） | |
| Body matenal | WCB、WC6、WC9、ZG20CrMoV、CF8、CF3、CF8M、CF3M等 | |
| 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℃～575℃ | |
| 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.