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Product Name:API Cast Steel Swing Check Valve
Class 150~1500 Swing Check Valve
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.
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