API Swing Check Valve

API Swing Check Valve

  • ● Reliable Quality
  • ● Reasonable Price
  • ● Fast Delivery
    • Service Hotline: +86-21-33758111
    Product Details

    Technical Parameters

    Product model: H44W/H

    Nominal diameter: NPS 2"~24"

    Nominal pressure: CL150~300Lb

    Operating temperature: -29°C~200°C

    Applicable medium: water, steam, oil, nitric acid, acetic acid


    Product Description

    American standard swing check valve is widely used in pipelines with nominal pressure 150LB-2500LB and working temperature of -29～550℃ in petroleum, chemical industry, thermal power station and other working conditions. The applicable medium is: water, oil, steam Wait. Its main function is to prevent the backflow of the medium, the reverse rotation of the pump and its driving motor, 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 the materials is high.

    2. The products are produced according to the requirements of American National Standard ANSI B16.34 and American Petroleum Institute Standard API 6D.

    3. Various piping flange standards and flange sealing types can be used to meet various engineering needs and user requirements.

    4. The material of the valve body is complete, and the gasket can be reasonably selected according to the actual working conditions or user requirements, and can be suitable for various pressure, temperature and medium working conditions.

    5. The matching of sealing pairs is advanced and reasonable. The sealing surface of the valve disc and valve seat is made of iron-based alloy or Stellite cobalt-based cemented carbide, which is wear-resistant and high-temperature resistant.


    Main parts material and performance

    Body, bonnet, disc, rocker, guide sleeve Pin Gasket Gasket Operating temperature Applicable media
    WCB 2Cr13

    Reinforced flexible graphite

    1Cr13/flexible graphite

    Stainless Steel/Acid Resistant Asbestos PTFE Teeth Gasket

    13Cr STL 

    body material

    PTFE nylon


    		≤425 Water, steam, oil
    WC1 ≤450
    WC6 ≤540
    WC9 ≤570
    C5 C12 ≤550
    CF8 304 ≤200 (non-corrosive media ≤600) Nitric acid, acetic acid, strong oxidizing media, urea
    CF3 316
    CF8M 304L
    CF3M 316L






    Main external 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