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:
Cast 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 ~ 2500LB, working temperature -46 ℃ ~ 570 ℃ 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.
◆ Executive standards
| Product Specification | Design Specification | Structure length | Connecting flange | Pressure-Temperature | TEST AND INSPECTION |
| API 6D、BS1868 | ASME B16.10 | ASME B16.5 | ASME B16.34 | API 598 |
◆ Main performance specifications
| Nominal pressure (Lb) | 150 | 300 | 600 | 900 | |
| Strength test | MPa | 3.1 | 7.8 | 15.3 | 23.1 |
| Lbf/in² | 150 | 1125 | 2225 | 3350 | |
| Water seal test | MPa | 2.2 | 5.6 | 11.2 | 16.8 |
| Lbf/in² | 315 | 815 | 1630 | 2440 | |
| Gas seal test | MPa | 0.5~0.7 | |||
| Lbf/in² | 60~100 | ||||
◆ Material of main parts
| Body/Bonnet/Disc/Rocker/Guide Sleeve | Pin shaft | Gasket | Sealing surface | Working temperature (℃) | Applicable media |
| WCB | 20Cr13 | reinforced flexible graphite 1Cr13/Flexible Graphite stainless steel/acid resistant asbestos PTFE tooth type gasket |
13Cr STL Body Material PTFE Nylon |
≤ 425 | Water, steam, oil, nitric acid Class, acetic acid, strong oxidizing Medium, urea, etc. |
| WC1 | ≤ 450 | ||||
| WC6 | ≤ 540 | ||||
| WC9 | ≤ 570 | ||||
| C5C12 | ≤ 550 | ||||
| CF8 | 304 | ≤ 600 | |||
| CF3 | 304L | ||||
| CF8M | 316 | ||||
| CF3M | 316L |
◆ 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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