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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.

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Classification:

Stainless steel valve series

Product Consulting:

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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