American Standard Swing Check Valve
A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.
Key words:
Classification:
Stainless steel valve series
Description
A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.
◆ Product use
American standard swing check valve is suitable for pressure Class150 ~ 300LB, working temperature -29 ℃ ~ 550 ℃ petroleum, chemical, pharmaceutical, fertilizer, power industry and other working conditions of the pipeline, to prevent the backflow of the medium.
◆Product features
1, the product structure is reasonable, reliable sealing, excellent performance;
2, valve, valve seat sealing surface with hardfacing carbide, wear-resistant, high temperature resistance, corrosion resistance, long service life;
3, smooth flow, small fluid resistance;
4, the valve stroke is short, close the valve impact force is small.
◆Main technical parameters
| Design Criteria | BS1868、API6D | ||
| Pressure-Temperature Rating | ASME B16.34 | ||
| Structure length | ASME B16.10 | ||
| Flange connection size | ASME B16.5 | ||
| Welding end connection | ASME B16.25 | ||
| Inspection and test | API598 | ||
| Nominal pressure (Lb) | 150 | 300 | 600 |
| Shell test | 3.0 | 7.5 | 16.5 |
| Test pressure (MPa) High pressure seal test |
2.0 | 5.0 | 12.1 |
| Applicable temperature | -29 ℃ ~ 550 ℃ (different materials for different working conditions) | ||
| Applicable media | Water, oil, steam and all kinds of corrosive media (different media use different materials) | ||
◆ Main parts materials
| Part Name | Material | Part Name | Material |
| Valve body | A351 CF8/CF8M | Cross pin | A194 F304 |
| Nut | A1948、8M | Bracket | A351 CF8/CF8M |
| Gasket | 304/316 Graphite | Bolt | A193 B8、B8M |
| Disc | A351 CF8/CF8M | Bonnet | A351 CF8/CF8M |
| Rocker | A351 CF8/CF8M | Lifting ring | A193 B8 |
◆ Main outline connection dimension
| Pound Class | NPS | L | D | D1 | D2 | f | b | Z-Fd | H |
| Class 150Lb | 2 | 203 | 150 | 120.7 | 92.1 | 2 | 14.3 | 4-F19 | 144 |
| 2-1/2 | 216 | 180 | 139.7 | 104.8 | 2 | 15.9 | 4-F19 | 150 | |
| 3 | 241 | 190 | 152.4 | 127 | 2 | 17.5 | 4-F19 | 210 | |
| 4 | 292 | 230 | 190.5 | 157.2 | 2 | 22.3 | 8-F19 | 217 | |
| 5 | 330 | 255 | 215.9 | 185.7 | 2 | 22.3 | 8-F22.5 | 235 | |
| 6 | 356 | 280 | 241.3 | 216 | 2 | 23.9 | 8-F22.5 | 305 | |
| 8 | 495 | 345 | 298.5 | 270 | 2 | 27 | 8-F22.5 | 370 | |
| 10 | 622 | 405 | 362.0 | 323.8 | 2 | 28.6 | 12-F25. 5 | 417 | |
| 12 | 698 | 485 | 431.8 | 381 | 2 | 30.2 | 12-F25. 5 | 478 | |
| 14 | 787 | 535 | 476.3 | 412.8 | 2 | 33.4 | 12-F28.5 | 540 | |
| 16 | 864 | 595 | 539.8 | 470 | 2 | 35 | 16-F28.5 | 620 | |
| 18 | 978 | 635 | 577.9 | 533.4 | 2 | 38.1 | 16-F32 | 685 | |
| 20 | 978 | 700 | 635.0 | 584.2 | 2 | 41.3 | 20-F32 | 720 | |
| 24 | 1295 | 815 | 749.3 | 692.2 | 2 | 46.1 | 20-F35 | 880 | |
| Class 300Lb | 2 | 267 | 165 | 127.0 | 92.1 | 2 | 20.7 | 8-F19 | 170 |
| 2-1/2 | 292 | 190 | 149.2 | 104.8 | 2 | 23.9 | 8-F22.5 | 190 | |
| 3 | 318 | 210 | 168.3 | 127 | 2 | 27 | 8-F22.5 | 216 | |
| 4 | 356 | 255 | 200.0 | 157.2 | 2 | 30.2 | 8-F22.5 | 260 | |
| 5 | 400 | 280 | 235.0 | 185.7 | 2 | 33.4 | 8-F22.5 | 280 | |
| 6 | 444 | 320 | 269.9 | 216 | 2 | 35 | 12-F22.5 | 305 | |
| 8 | 533 | 380 | 330.2 | 270 | 2 | 39.7 | 12-F25. 5 | 368 | |
| 10 | 622 | 445 | 387.4 | 323.8 | 2 | 46.1 | 16-F28.5 | 410 | |
| 12 | 711 | 520 | 450.8 | 381 | 2 | 49.3 | 16-F32 | 445 | |
| 14 | 838 | 585 | 514.4 | 412.8 | 2 | 52.4 | 20-F32 | 570 | |
| 16 | 864 | 650 | 571.5 | 470 | 2 | 55.6 | 20-F35 | 630 | |
| 18 | 978 | 710 | 628.6 | 533.4 | 2 | 58.8 | 24-F35 | 676 | |
| 20 | 1016 | 775 | 685.8 | 584.2 | 2 | 62 | 24-F35 | 740 | |
| 24 | 1346 | 915 | 812.8 | 692.2 | 2 | 68.3 | 24-F41 | 900 |
Note: The flange size in this table is in accordance with ASME B16.5 standard, and the structure length is in accordance with ASME B16.10.
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