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API Stainless Steel Check Valve

Technical Parameters

Product model: H44W/H
Nominal diameter: NPS 2"~24"
Nominal pressure: CL150~300Lb
Working temperature: -29°C~200°C
Applicable medium: water, steam, oil, nitric acid, acetic acid


Product Details

Product overview
American standard swing check valve is widely used in pipelines under various working conditions such as petroleum, chemical industry, thermal power stations and other working conditions with nominal pressure of 150LB-2500LB and working temperature -29~550°C, and the applicable medium is: water, oil, steam, etc. Its main function is to prevent the backflow of the medium, prevent the pump and its drive motor from reversing, and the discharge of the medium in the container.

Product features
1. The selection of materials is exquisite, in line with relevant domestic and foreign standards, and the overall quality of materials is high.
2. The products are produced according to the American national standard ANSI B16.34 and the American Petroleum Institute standard API 6D requirements.
3. Various piping flange standards and flange sealing types can be adopted to meet various engineering needs and user requirements.
4. The valve body material is complete, and the gasket can be reasonably selected according to the actual working conditions or user requirements, and can be applied to various pressure, temperature and medium working conditions.
5. The sealing pair is advanced and reasonable, and the sealing surface of the valve disc and valve seat is made of iron-based alloy or Stellite cobalt-based carbide overlay welding surface, which is wear-resistant and high-temperature resistant.


Main Outline Connection Dimensions and Weight

Class NPS DN L D D1 D2 b Z-Φd H WT (㎏)
in mm
150Lb 2″ 50 203 157 120.7 92 19.50 4-Φ19 161 17
2-1/2″ 65 216 178 139.7 105 22.5 4-Φ19 180 23
3″ 80 241 190.5 152.4 127 24 4-Φ19 190 33
4″ 100 292 229 190.50 157.2 24 8-Φ19 220 44
6″ 150 356 279 241.5 216 25.5 8-Φ22.5 257 78
8″ 200 495 343 298.5 270 29 8-Φ22.5 292 137
10″ 250 622 406 362 324 30.5 12-Φ25 350 207
12″ 300 698 483 432 381 32 12-Φ25 398 279
14″ 350 787 533 476.8 413 35 12-Φ29 445 387
16″ 400 864 597 539.8 470 37 16-Φ29 490 446
18″ 450 978 635 577.8 533 40 16-Φ32 520 621
20″ 500 978 698 635 584 43 20-Φ32 546 770
24″ 600 1295 813 749.3 692 48 20-Φ35 880 970
300Lb 2″ 50 267 165 127 92 22.5 8-Φ19 179.5 20
2-1/2″ 65 292 190 150 105 25 8-Φ22 190 24
3″ 80 318 210 168 127 29.0 8-Φ22.5 212.4 40
4″ 100 356 254 200 157 32.0 8-Φ22.5 246 51
6″ 150 445 317.5 269.7 216 37.0 12-Φ22.5 292 90
8″ 200 533 381 330 270 41.5 12-Φ25.5 328 175
10″ 250 622 444.5 387 324 48.0 16-Φ28.5 378.6 210
12″ 300 711 521 451 381 51.0 16-Φ32 420 286
14″ 350 838 584 514 54 57 20-Φ32 470 400
16″ 400 864 648 572 57 57 20-Φ35 530 550
18″ 450 978 711 629 60 60 24-Φ35 584 700
20″ 500 1016 775 686 64 64 24-Φ35 610 860
24″ 600 1346 914 813 70 70 24-Φ41 860 1931
600Lb 2″ 50 292 165 127 92 25 8-Φ19 203 34
2-1/2″ 65 330 190 150 105 29 8-Φ22 229 45
3″ 80 356 210 168 127 32 8-Φ22 235 63
4″ 100 432 273 216 157 38 8-Φ25 286 114
6″ 150 559 356 292 216 48 8-Φ29 330 207
8″ 200 660 419 349 270 56 12-Φ29 381 387
10″ 250 787 508 432 324 64 12-Φ32 457 580
12″ 300 838 559 489 381 67 16-Φ35 584 778
14″ 350 889 603 527 413 70 20-Φ38 635 9896
16″ 400 991 686 603 470 76 20-Φ41 684 1380

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