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    API Cast Steel Swing Check Valve Home >> Products >> Check valve

    Detailed introduction
    Bolted cover, swing type disc, Threaded or welded seat ring
    ASTM A216 WCB, A217 WC6, A351 CF8, A351CF8M, A351 CF3, A351 CF3M, A351 CN7M
     
    Standards compliance 
    Design and Manufacture: ANSI B16.34, API 6D(full bore), BS1868(reduced bore)
    Face to face(end to end): ANSI B16.10, API 6D
    Flanged connection: 2"~24" to ANSI B16.5, 22",26"~36" to MSS-SP-44 to API 605 on Request
    Butt welded end: ANSI B16.25
    Test and inspection: API 598, API 6D
     
    Materials list
    NO.
    Part Name
    Material
    12
    Disc Nut
    Carbon steel/stainless steel
    11
    Washer
    Carbon steel/stainless steel
    10
    Hinge Pin
    Carbon steel/stainless steel
    09
    Seat Ring
    CS+SS/SS/SS+STL(see body materials)
    08
    Disc
    CS+SS/SS/SS+STL(see body materials)
     
    NO.
    Part Name
    WCB
    LCB
    WC6
    WC9
    07
    Bolt Stud & Nut
    A193 Gr B7/A194 Gr 2H
    A320 Gr L7/A194 Gr 4
    A193 Gr B16/A194 Gr 4/7
    A193 Gr B16/A194 Gr 4/7
    06
    Cover Bolt & Nut
    A193 Gr B7/A194 Gr 2H
    A320 Gr L7/A194 Gr 4
    A193 Gr B16/A194 Gr 4/7
    A193 Gr B16/A194 Gr 4/7
    05
    Gasket
    Spiral wound/soft iron
    Spiral wound/soft iron
    spiral wound/SS304
    spiral wound/SS304
    04
    Hinge Yoke
    A216 Gr WCB
    A352 Gr LCB
    A217 Gr WC6
    A217 Gr WC9
    03
    Hinge
    A216 Gr WCB
    A352 Gr LCB
    A217 Gr WC6
    A217 Gr WC9
    02
    Cover
    A216 Gr WCB
    A352 Gr LCB
    A217 Gr WC6
    A217 Gr WC9
    01
    Body
    A216 Gr WCB
    A352 Gr LCB
    A217 Gr WC6
    A217 Gr WC9
     
    NO.
    Part Name
    C5
    C12
    CF8
    CF8M
    07
    Bracket Stud&Nut
    A193 Gr B16/A194 Gr 4
    A193 Gr B16/A194 Gr 4/7
    A193 Gr B8/A194 Gr 8
    A193 Gr B8M/A194 Gr 8M
    06
    Cover Bolt&Nut
    A193 Gr B16/A194 Gr 4
    A193 Gr B17/A194 Gr 4/7
    A193 Gr B8/A194 Gr 8
    A193 Gr B8M/A194 Gr 8M
    05
    Gasket
    Spiral wound/soft iron
    Spiral wound/SS304
    spiral wound/SS304
    spiral wound/SS316
    04
    Hinge Yoke
    A217 Gr C5
    A217 Gr C12
    A351 Gr CF8
    A351 Gr CF8M
    03
    Hinge
    A217 Gr C5
    A217 Gr C12
    A351 Gr CF8
    A351 Gr CF8M
    02
    Cover
    A217 Gr C5
    A217 Gr C12
    A351 Gr CF8
    A351 Gr CF8M
    01
    Body
    A217 Gr C5
    A217 Gr C12
    A351 Gr CF8
    A351 Gr CF8M
    Higher sizes are with dashpot arrangement to control the movement of the disc order to avoid slamming and water hammer.
     
    Dimensions (mm) and weight for ANSI Class 150
    Size
    inch
    2
    2-1/2
    3
    4
    5
    6
    8
    10
    12
    14
    16
    18
    20
    24
    L-RF.BW
    mm
    203
    216
    214
    292
    330
    356
    495
    622
    699
    787
    864
    978
    978
    1295
    L-RTJ
    mm
    216
    229
    254
    305
    343
    368
    508
    635
    717
    800
    876
    991
    991
    1308
    H
    mm
    155
    190
    200
    225
    245
    260
    350
    390
    410
    435
    530
    570
    625
    675
    Weight
    KG
    16
    25
    34
    46
    75
    89
    120
    220
    337
    471
    575
    788
    916
    1275
     
    Dimensions (mm) and weight for ANSI Class 300
    Size
    inch
    2
    2-1/2
    3
    4
    5
    6
    8
    10
    12
    14
    16
    18
    20
    24
    L-RF.BW
    mm
    267
    292
    318
    355
    400
    440
    533
    622
    711
    838
    863
    977
    1016
    1346
    L-RTJ
    mm
    283
    308
    333
    371
    416
    460
    549
    638
    727
    854
    879
    994
    1036
    1368
    H
    mm
    180
    200
    225
    240
    275
    310
    370
    410
    440
    500
    545
    605
    675
    785
    Weight
    KG
    26
    32
    53
    73
    110
    157
    234
    384
    450
    650
    800
    970
    1350
    2210
     
    Dimensions (mm) and weight for ANSI Class 600
    Size
    inch
    2
    2-1/2
    3
    4
    5
    6
    8
    10
    12
    14
    16
    18
    20
    L-RF.BW
    mm
    292
    330
    356
    432
    508
    559
    660
    787
    838
    889
    991
    1092
    1194
    L-RTJ
    mm
    295
    333
    359
    435
    511
    562
    664
    791
    841
    892
    994
    1095
    1200
    H
    mm
    190
    215
    250
    260
    310
    350
    420
    490
    525
    580
    630
    690
    810
    Weight
    KG
    33
    49
    62
    95
    120
    195
    360
    465
    725
    875
    1075
    1475
    1900
     
    Dimensions (mm) and weight for ANSI Class 900
    Size
    inch
    2
    2-1/2
    3
    4
    5
    6
    8
    10
    12
    14
    L-RF.BW
    mm
    368
    419
    381
    457
    559
    610
    737
    838
    965
    1029
    L-RTJ
    mm
    371
    422
    384
    460
    562
    613
    740
    841
    968
    1038
    H
    mm
    195
    235
    260
    275
    320
    370
    435
    520
    530
    580
    Weight
    KG
    55
    70
    90
    135
    165
    295
    525
    900
    1075
    1225
    Welco Valve can also produce ANSI Class 1500 rating for our customer, Please feel free to contact us for more information.