DUAL-PLATE HIGH PERFORMANCE Wafer Check Valves, API 594

DUAL-PLATE HIGH PERFORMANCE Wafer Check Valves, API 594

WAFER CHECK VALVES, API 594
Valves Principles – Valve Automation Specialist
DUAL-PLATE
HIGH PERFORMANCE
Wafer Check Valves, API 594
CATALOGUE
1
WAFER CHECK VALVES, API 594
DUAL-PLATE CHECK
High performance non-slam check valves are the original Mission wafer check valves introduced to the market
in the late 50’s. They are available in the sizes, pressure classes and configurations you need to meet the most
demanding of applications. Our product range includes, but is not limited to:
• Sizes: 2” to 88”
• ASME Pressure Class 125 through 2500
• API 6A and 6D pressure classes
• DIN, JIS, BS, AS, and ISO standards are also available
• Wafer, lug, double flanged and extended body styles
• Configurations available in retainered and retainerless style
• Body Materials:
Cast Iron, Carbon Steel, Stainless Steels,
Duplex Stainless Steel, Super Duplex
• Resilient Seat Materials:
EPDM, Buna-N, Neoprene, Silicone and Viton-B®
• Integral and overlaid metal seats also available
• End Connections:
Raised Face, Plain Face, Ring Joint,
Weld-End, Hub-End
API 594
Industry Standards*
Valve Design
API 598
ASME B16.5 &
B16.47
ASME B16.34
API 6D
API 6A
(PED) 97/23/EC
Valve Pressure Testing &
Inspection
Flanges
Pressure / Temperature
Ratings
Pipeline Valves
Production Valves
Pressure Equipment
Directive
*Duo-Chek meets or exceed these industry standards.
Retainerless valves for critical applications
without pin retainer penetration through
the body are available in Wafer and are
standard in Lug and Double Flange valves.
Long-leg spring action
allows plates to open and
close without seat scrubbing.
Dual plate lightweight design for
efficient seating and operation.
Spring action closes plates
independently. (6" and larger)
Hinge support sleeve reduces friction
and minimizes water hammer through
independent plate suspension (on
larger sizes).
2
WAFER CHECK VALVES, API 594
CORPORATE PHILOSOPHY
The FCValtech corporate philosophy is to bring to the market new and innovative valve designs with special
emphasis on quality, safety, ease of operation, and most of all, long service life. All this combined with the use of
high quality materials, advanced manufacturing technology and automation in all stages of manufacturing ensures
the highest possible quality at a competitive price. FCValtech is strongly committed to providing the highest level
of customer service. The company’s strengths in design, production and marketing enables it to be a leader, today
and into the future.
MANUFACTURING RANGE
Sizes:
• 2” to 72”
Body Styles:
Special Features:
Pressures:
• ANSI Class 150 to 2500
• API 2000# to 10000#
• Flanged
• Retainerless body
• Flangless (Wafer Style)
• Patented hinge design
• Lug (Drilled or Threaded)
• No gasket restrictions
• Butt Weld
• No fugitive emissions
• Hub End (for Clamp Joints)
• Lapped (metal) seats
Temperatures:
• Minus 400ºF. to 1200ºF.
• Extended Body
Seating:
• Resilient or Metal to Metal
Materials:
Cast or Forged
DESIGN & PERFORMANCE STANDARDS
• ANSI B16.5 flange dimension
• ANSI B16.47 above 24”, flange dimension
• API 594 – materials, design & face to face
• API 605 (B16.47), flange dimension
FLANGED TYPE
• API 6A – flange dimension & face to face
• API 6D – materials
• API 598 – testing
• ANSI B16.34 – materials, wall thickness
LUG TYPE
WAFER TYPE
3
WAFER CHECK VALVES, API 594
DUAL-PLATE CHECK VALVE
FEATURES AND BENEFITS
4
WAFER CHECK VALVES, API 594
B
D
Wafer Body Dimensions
A
A
A
Flow Direction
C
Serrated
be vertical for horizontal flow.
Bore
Plain Face
ASME Class 150
Size
A
in mm
in mm
2"
50 4 1⁄ 8 105
2 1⁄ 2" 65 4 7⁄ 8 124
3"
80 5 3⁄ 8 137
4" 100 6 7⁄ 8 175
5" 125 7 3⁄ 4 197
6" 150 8 3⁄ 4 222
8" 200 11
279
10" 250 13 3⁄ 8 340
12" 300 16 1⁄ 8 410
14" 350 17 3⁄ 4 451
16" 400 20 1⁄ 4 514
18" 450 21 5⁄ 8 549
20" 500 23 7⁄ 8 606
24" 600 28 1⁄ 4 718
26" 650 30 1⁄ 2 775
30" 750 34 3⁄ 4 883
36" 900 41 1⁄ 4 1048
42" 1050 48 1219
48" 1200 54 1⁄ 2 1384
54" 1350 61 1549
60" 1500 67 1⁄ 2 1715
66" 1650 74 1⁄ 4 1886
72" 1800 80 3⁄ 4 2051
78" 1950 84 2133
84" 2100 89 3⁄ 4 2280
88" 2200 94 2388
Section A
ASME Class 300
B
C
in mm in
mm
60 1 15⁄ 16
49
2 3⁄ 8
2 5⁄ 8
67 2 11⁄ 32
60
73 2 29⁄ 32
74
2 7⁄ 8
2 7⁄ 8
73 3 53⁄ 64
97
3 3⁄ 8
86 4 13⁄ 16 122
98 5 49⁄ 64 146
3 7⁄ 8
5
127 7 5⁄ 8
194
243
5 3⁄ 4 146 9 9⁄ 16
7 1⁄ 8 181 11 3⁄ 8 289
7 1⁄ 4 184 12 1⁄ 2 318
7 1⁄ 2 191 15
381
203 16 7⁄ 8 429
8
8 5⁄ 8 219 1813⁄16 478
8 3⁄ 4 222 22 5⁄ 8 575
14 356 24 1⁄ 4 616
13 330 29 1⁄ 4 743
15 1⁄ 4 387 35
889
1041
17 432 41
1194
20 5⁄ 8 524 47
21 1⁄ 4 540 51 1⁄ 2 1308
26 660 56
1422
31 787 65 1⁄ 4 1657
36 914 68
1727
991 74
1880
39
42 1067 80
2032
2134
44 1118 84
ASME Class 600
Size
A
B
in mm
in mm in mm
2"
50 4 3⁄ 8 111 2 3⁄ 8
60
2 1⁄ 2" 65 5 1⁄ 8 130 2 5⁄ 8
67
73
3"
80 5 7⁄ 8 149 2 7⁄ 8
4" 100 7 5⁄ 8 194 3 1⁄ 8
79
5" 125 9 1⁄ 2 241 4 1⁄ 8 105
6" 150 10 1⁄ 2 267 5 3⁄ 8 136
8" 200 12 5⁄ 8 321 6 1⁄ 2 165
10" 250 15 3⁄ 4 400 8 3⁄ 8 213
12" 300 18
457 9
229
14" 350 19 3⁄ 8 492 10 3⁄ 4 273
16" 400 22 1⁄ 4 565 12
305
18" 450 24 1⁄ 8 613 14 1⁄ 4 362
20" 500 26 7⁄ 8 683 14 1⁄ 2 368
24" 600 31 1⁄ 8 791 17 1⁄ 4 438
547
26" 650 34 1⁄ 8 867 18
30" 750 38 1⁄ 4 972 197⁄ 8 505
36" 900 44 1⁄ 2 1130 25
635
42" 1050 48 1219 27 5⁄ 8 702
C
in
mm
1 15⁄ 16
49
2 11⁄ 32
60
2 29⁄ 32
74
3 53⁄ 64
97
4 13⁄ 16 122
5 49⁄ 64 146
7 5⁄ 8
194
9 9⁄ 16 243
11 3⁄ 8 289
12 1⁄ 2 318
14 5⁄ 16 364
16 1⁄ 8 410
17 15⁄ 16 456
21 9⁄ 16 548
24
610
283⁄ 4 730
333⁄ 4 857
39 1⁄ 2 1003
ASME Class 1500
Size
A
in mm
in mm
2"
50 5 5⁄ 8 143
2 1⁄ 2" 65 6 1⁄ 2 165
3"
80 6 7⁄ 8 175
4" 100 8 1⁄ 4 210
5" 125 10
254
6" 150 11 1⁄ 8 283
8" 200 13 7⁄ 8 352
10" 250 17 1⁄ 8 435
12" 300 20 1⁄ 2 521
14" 350 22 3⁄ 4 578
16" 400 25 1⁄ 4 641
18" 450 27 3⁄ 4 705
20" 500 29 3⁄ 4 756
24" 600 35 1⁄ 2 902
C
in
mm
1 11⁄ 16 43
1
54
2 ⁄8
2 5⁄ 8
67
3 7⁄ 16
87
4 5⁄ 16 110
3
5 ⁄ 16 132
6 13⁄ 16 173
8 1⁄ 2
216
10 1⁄ 8 257
11 1⁄ 2 292
12 13⁄ 16 325
13 3⁄ 4 349
14 3⁄ 4 375
15 1⁄ 8 384
B
in mm
2 3⁄ 4
70
3 1⁄ 4
83
3 1⁄ 4
83
4
102
–
–
6 1⁄ 4 159
8 1⁄ 8 206
9 3⁄ 4 248
12
305
14
356
15 1⁄ 8 384
18 7⁄ 16 468
21
533
22
559
D
in
–
–
mm
–
–
6
16
22
35
54
70
83
83
113
137
160
210
203
229
303
381
425
502
–
–
–
–
–
–
⁄4
⁄8
7
⁄8
1 3⁄ 8
2 1⁄ 8
2 3⁄ 4
3 1⁄ 4
3 1⁄ 4
4 7⁄ 16
5 3⁄ 8
6 5⁄ 16
8 1⁄ 4
8
9
1115⁄16
15
16 3⁄ 4
19 3⁄ 4
–
–
–
–
–
–
1
5
D
mm
–
3
6
22
25
36
51
58
88
70
110
94
135
167
184
243
303
362
Weight
lbs. kg .
7
3
11
5
15
7
26 12
50 22.7
80 36
135 61
238 108
333 151
455 206
640 290
890 404
1120 508
2040 925
2530 1148
3375 1531
6300 2858
8447 3832
mm
–
2
8
14
–
27
36
43
57
51
67
68
102
105
Weight
lbs. kg .
6
14
16
7
11
25
20
43
–
–
50
110
219
99
397 180
725 329
948 430
1380 627
1900 863
2750 1247
4409 2000
in
–
⁄8
⁄4
7
⁄8
1
1 7⁄ 16
2
2 9⁄ 32
3 15⁄ 32
2 3⁄ 4
4 5⁄ 16
3 11⁄ 16
5 5⁄ 16
6 9⁄ 16
7 1⁄ 4
9 9⁄ 16
11 15⁄16
14 1⁄ 4
1
1
D
in
–
⁄ 16
5
⁄ 16
9
⁄ 16
–
1 1⁄ 16
1 13⁄ 32
1 11⁄ 16
2 1⁄ 4
2
2 5⁄ 8
2 11⁄ 16
4
4 1⁄ 8
1
Weight
lbs. kg .
6
3
10
5
13
6
17
8
27
12
35
16
70
32
106
48
172
78
200
91
275 125
315 143
435 197
620 281
1555 705
1230 558
2017 915
2800 1270
3920 1778
6172 2800
7800 3538
12000 5443
14000 6350
17160 7800
20460 9300
23100 10500
Size
in mm
2"
50
2 1⁄ 2" 65
3"
80
4" 100
5" 125
6" 150
8" 200
10" 250
12" 300
14" 350
16" 400
18" 450
20" 500
24" 600
26" 650
30" 750
36" 900
42" 1050
48" 1200
A
in mm
4 3⁄ 8 111
5 1⁄ 8 130
5 7⁄ 8 149
7 1⁄ 8 181
8 1⁄ 2 216
9 7⁄ 8 251
12 1⁄ 8 308
14 1⁄ 4 362
16 5⁄ 8 422
19 1⁄ 8 486
21 1⁄ 4 540
23 1⁄ 2 597
25 3⁄ 4 654
30 1⁄ 2 775
32 7⁄ 8 835
37 1⁄ 2 953
44 1118
45 7⁄ 8 1289
52 1⁄ 8 1492
B
in mm
2 3⁄ 8
60
2 5⁄ 8
67
2 7⁄ 8
73
2 7⁄ 8
73
3
3 ⁄8
86
3 7⁄ 8
98
5
127
5 3⁄ 4 146
7 1⁄ 8 181
8 3⁄ 4 222
9 1⁄ 8 232
10 3⁄ 8 264
11 1⁄ 2 292
12 1⁄ 2 318
14
356
141⁄ 2 368
19
483
22 3⁄ 8 568
24 3⁄ 4 629
C
in
mm
1 15⁄ 16
49
2 11⁄ 32
60
2 29⁄ 32
74
3 53⁄ 64
97
13
4 ⁄ 16 122
5 49⁄ 64 146
7 5⁄ 8
194
9 9⁄ 16 243
3
11 ⁄ 8 289
12 1⁄ 2 318
14 5⁄ 16 364
16 7⁄ 8 429
17 15⁄ 16 456
21 9⁄ 16 548
24 3⁄ 8 619
283⁄ 4 730
35
889
41
1041
47
1194
ASME Class 900
Size
A
in mm
in mm
2"
50 5 5⁄ 8 143
2 1⁄ 2" 65 6 1⁄ 2 165
3"
80 6 5⁄ 8 168
4" 100 8 1⁄ 8 206
5" 125 9 3⁄ 4 248
6" 150 11 3⁄ 8 289
8" 200 14 1⁄ 8 359
10" 250 17 1⁄ 8 435
12" 300 19 5⁄ 8 498
14" 350 20 1⁄ 2 521
16" 400 22 5⁄ 8 575
18" 950 25 1⁄ 8 638
20" 500 27 1⁄ 2 699
838
24" 600 33
B
in mm
2 3⁄ 4
70
3 1⁄ 4
83
3 1⁄ 4
83
4
102
–
–
6 1⁄ 4 159
8 1⁄ 8 206
9 1⁄ 2 241
11 1⁄ 2 292
14
356
15 1⁄ 8 384
17 3⁄ 4 451
17 3⁄ 4 451
19 1⁄ 2 495
C
in
mm
1 11⁄ 16
43
2 1⁄ 8
54
2 5⁄ 8
67
7
3 ⁄ 16
87
4 5⁄ 16 110
5 3⁄ 16 132
6 13⁄ 16 173
8 1⁄ 2
216
10 1⁄ 8 257
11 1⁄ 2 292
12 13⁄ 16 325
14 7⁄ 16 367
17 15⁄ 16 456
21 1⁄ 2 546
ASME Class 2500
Size
A
in mm
in mm
2"
50 5 3⁄ 4 146
2 1⁄ 2" 65 6 5⁄ 8 168
3"
80 7 3⁄ 4 197
4" 100 9 1⁄ 4 235
5" 125 11 279
6" 150 12 1⁄ 2 318
8" 200 15 1⁄ 4 387
10" 250 18 3⁄ 4 476
12" 300 21 5⁄ 8 549
in
2 3⁄ 4
3 1⁄ 4
3 3⁄ 8
4 1⁄ 8
–
6 1⁄ 4
8 1⁄ 8
10
12
B
mm
70
83
86
105
–
159
206
254
305
D
in
mm
–
–
–
–
1
⁄4
6
5
⁄8
16
7
⁄8
22
1 3⁄ 8
35
2 1⁄ 8
54
2 3⁄ 4
70
1
3 ⁄4
83
3 3⁄ 16
81
4 1⁄ 8 105
4 13⁄ 16 122
5 5⁄ 8 143
7 1⁄ 16 179
8
203
9 1⁄ 16 230
11 3⁄ 16 284
14 3⁄ 4 375
16 1⁄ 2 419
Weight
lbs. kg .
7
3
11
5
15
7
18
8
35
16
45
20
82
37
125
57
200
91
325 147
415 188
555 252
725 329
1100 499
1605 728
2050 930
3573 1621
4723 2147
6090 2768
D
mm
–
2
8
14
–
27
36
46
59
51
67
65
135
143
Weight
lbs. kg .
14
6
7
16
24 11
40 18
–
–
115 52
229 104
388 176
540 245
926 420
1152 523
1318 598
1426 647
2729 1238
mm
–
2
6
11
–
27
43
46
56
Weight
lbs. kg .
15
7
22 10
31 14
54 25
–
–
190 86
285 129
502 228
963 437
in
–
⁄ 16
⁄ 16
⁄ 16
–
1 1⁄ 16
1 13⁄ 32
1 13⁄ 16
2 5⁄ 16
2
2 5⁄ 8
2 9⁄ 16
5 5⁄ 16
5 5⁄ 8
1
5
9
C
in
1 11⁄ 16
2 1⁄ 8
2 5⁄ 8
3 7⁄ 16
4 5⁄ 16
5 3⁄ 16
6 13⁄ 16
8 1⁄ 2
10 1⁄ 8
D
mm
43
54
67
87
110
132
173
216
257
in
–
⁄ 16
1
⁄4
7
⁄ 16
–
1 1⁄ 16
1 11⁄ 16
1 13⁄ 16
2 3⁄ 16
1
5
WAFER CHECK VALVES, API 594
Flanged Body Dimensions
B
A
C
Pin must be vertical
for horizontal flow.
ASME Class 600
ASME Class 150
Size
in
mm
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
42"
48"
54"
60"
66"
72"
78"
84"
88"
200
250
300
350
400
450
500
600
750
900
1050
1200
1350
1500
1650
1800
1950
2100
2200
A
in
13 1⁄ 2
16
19
21
23 1⁄ 2
25
27 1⁄ 2
32
38 3⁄ 4
46
53
59 1⁄ 2
66 1⁄ 4
73
80
86 1⁄ 2
90
96
–
B
mm
343
406
483
533
597
635
699
813
984
1168
1346
1511
1683
1854
2032
2197
2286
2438
–
in
C
mm
in
5
127 7 5⁄ 8
5 3⁄ 4
146 9 9⁄ 16
181 11 3⁄ 8
7 1⁄ 8
184 12 1⁄ 2
7 1⁄ 4
7 1⁄ 2
191 15
8
203 16 7⁄ 8
8 5⁄ 8
219 18 7⁄ 8
222 22 5⁄ 8
8 3⁄ 4
12
305 29 1⁄ 4
14 ½ 368 35
17
432 41
20 5⁄ 8 524 47
21 1⁄ 4 539 51 1⁄ 2
26
660 56
31
787 62 1⁄ 2
36
914 68
39
991 74
42
1067 80
–
– –
mm
194
243
289
318
381
428
480
575
743
889
1041
1194
1308
1422
1588
1727
1880
2032
–
Weight
lbs .
kg.
93
189
308
352
496
551
661
860
1512
2525
4163
5880
–
–
–
–
–
–
–
42
86
140
160
225
250
300
389
687
1145
1888
2667
–
–
–
–
–
–
–
ASME Class 300
Size
in
mm
12"
300
14"
350
16"
400
18"
450
20"
500
24"
600
30"
750
36"
900
42" 1050
48" 1200
54" 1350
60" 1500
6
A
in
20 1⁄ 2
23
25 1⁄ 2
28
30 1⁄ 2
36
43
50
50 3⁄ 4
57 3⁄ 4
65 1⁄ 4
71 1⁄ 4
Flow Direction
B
mm
521
584
648
711
775
914
1092
1270
1289
1467
1657
1809
in
7 1⁄ 8
8 3⁄ 4
9 1⁄ 8
10 3⁄ 8
11 1⁄ 2
12 1⁄ 2
14 1⁄ 2
19
22 3⁄ 8
24 3⁄ 4
27 1⁄ 4
32 1⁄ 2
C
mm
181
222
232
264
292
318
368
483
568
629
692
826
in
11 3⁄ 8
12 1⁄ 2
143⁄ 8
16 1⁄ 8
17 7⁄ 8
22 1⁄ 8
28 3⁄ 4
35
41
47
51 1⁄ 2
56
mm
289
318
365
409
454
562
730
864
1041
1193
1308
1422
Weight
lbs.
kg.
465
211
593
269
771
350
970
440
1078
488
1516
686
3100 1406
4650 2109
8670 3932
9950 4513
–
–
–
–
Size
in
mm
12"
300
14"
350
16"
400
18"
450
20"
500
24"
600
30"
750
36"
900
42" 1050
48" 1200
A
in
22
23 3⁄ 4
27
29 1⁄ 4
32
37
44 1⁄ 2
51 3⁄ 4
55 1⁄ 4
62 3⁄ 4
B
mm
559
603
685
743
813
940
1130
1314
1403
1594
in
mm
229
273
305
362
368
438
505
635
701
787
9
10 3⁄ 4
12
14 1⁄ 4
14 1⁄ 2
17 1⁄ 4
19 7⁄ 8
25
27 37⁄ 64
31
mm
610
641
705
787
857
1041
1232
1461
1562
B
in
mm
111⁄ 2 292
14
356
15 1⁄ 8 384
17 3⁄ 4 451
17 3⁄ 4 451
19 1⁄ 2 495
25
635
28
711
31 1⁄ 2 800
C
Weight
in
mm
lbs.
kg.
289
612
277
11 3⁄ 8
12 1⁄ 2
318
826
375
143⁄ 8 365
951
430
16 1⁄ 8
409 1433
650
18
457 1763
800
21 9⁄ 16 548 2755
1250
28 3⁄ 4
730 5070
2300
33 3⁄ 4
857 7605
3450
39 1⁄ 2 1003 9985
4529
36
914 12600 5715
ASME Class 900
Size
in
mm
12"
300
14"
350
16"
400
18"
450
20"
500
24"
600
30"
750
36"
900
42" 1050
A
in
24
25 1⁄ 4
27 3⁄ 4
31
33 3⁄ 4
41
48 1⁄ 2
57 1⁄ 2
61 1⁄ 2
C
in
10 1⁄ 8
11 1⁄ 2
127⁄ 8
14 1⁄ 2
18
21 1⁄ 2
26
31
36
mm
257
292
327
368
457
546
660
787
914
Weight
lbs.
kg.
770
349
1240
561
1653
750
2314
1050
2866
1300
4175
1893
6500
2948
–
–
–
–
WAFER CHECK VALVES, API 594
Lug Body Dimensions
B
C
ASME Class 150
Size
in
2"
2 1⁄ 2"
3"
4"
5"
6"
A
mm
50
65
80
100
125
150
in
B
mm
152
178
191
229
254
279
6
7
7 1⁄ 2
9
10
11
ASME Class 300
Size
A
in
mm
in
mm
2"
50 6 1⁄ 2
165
2 1⁄ 2" 65 7 1⁄ 2
191
210
3"
80 8 1⁄ 4
4" 100 10
254
5" 125 11
279
6" 150 12 1⁄ 2 318
8" 200 15
381
10" 250 17 1⁄ 2 445
in
2 3⁄ 8
2 5⁄ 8
2 7⁄ 8
2 7⁄ 8
3 3⁄ 8
3 7⁄ 8
C
mm
60
67
73
73
86
98
in
1 15⁄ 16
2 11⁄ 32
2 29⁄ 32
3 53⁄ 64
4 13⁄ 16
5 49⁄ 64
B
in
2 3⁄ 8
2 5⁄ 8
2 7⁄ 8
2 7⁄ 8
3 3⁄ 8
3 7⁄ 8
5
5 3⁄ 4
mm
49
60
74
97
122
146
C
mm
60
67
73
73
86
98
127
146
in
1 15⁄ 16
2 11⁄ 32
2 29⁄ 32
3 53⁄ 64
4 13⁄ 16
5 49⁄ 64
7 5⁄ 8
9 9⁄ 16
mm
60
67
73
79
136
165
213
in
1 15⁄ 16
2 11⁄ 32
2 29⁄ 32
3 53⁄ 64
5 49⁄ 64
7 5⁄ 8
9 9⁄ 16
Weight
lbs.
kg .
17
8
17
8
44
20
44
20
481⁄ 2
22
77
35
mm
49
60
74
97
122
146
194
243
Weight
lbs.
kg .
18
8
22
10
30
14
44
20
51
23
84
38
163
74
270 123
mm
49
60
74
97
146
194
243
Weight
lbs.
kg .
18
8
22
10
30
14
60
27
183
83
295 134
540 245
ASME Class 600
Size
in
mm
2"
50
65
2 1⁄ 2"
3"
80
4"
100
6"
150
8"
200
10" 250
A
in
6 1⁄ 2
7 1⁄ 2
8 1⁄ 4
10 3⁄ 4
14
16 1⁄ 2
20
B
mm
165
191
210
273
356
419
508
in
2 3⁄ 8
2 5⁄ 8
2 7⁄ 8
3 1⁄ 8
5 3⁄ 8
6 1⁄ 2
8 3⁄ 8
C
ASME Class
Size
in
mm
2"
50
3"
80
4"
100
6"
150
8"
200
10" 250
900
in
81⁄ 2
91⁄ 2
111⁄ 2
15
181⁄ 2
211⁄ 2
mm
216
241
292
381
470
546
in
2 3⁄ 4
3 1⁄ 4
4
6 1⁄ 4
8 1⁄ 8
9 1⁄ 2
ASME Class
Size
in
mm
2"
50
3"
80
4"
100
6"
150
8"
200
10" 250
12" 300
14" 350
16" 400
18" 450
20" 500
24" 600
1500
A
in
8 1⁄ 2
10 1⁄ 2
12 1⁄ 4
15 1⁄ 2
19
23
26 1⁄ 2
29 1⁄ 2
32 1⁄ 2
36
38 3⁄ 4
46
mm
216
267
311
394
483
584
673
749
826
914
984
1168
B
in
mm
2 3⁄ 4
70
3 1⁄ 4
83
4
102
6 1⁄ 4
159
8 1⁄ 8
206
248
9 3⁄ 4
12
305
14
356
15 1⁄ 8
384
18 7⁄ 16 468
21
533
22
559
ASME Class
Size
in
mm
2"
50
3"
80
4"
100
6"
150
8"
200
10" 250
12" 300
2500
mm
235
305
356
483
552
673
762
in
2 3⁄ 4
3 3⁄ 8
4 1⁄ 8
6 1⁄ 4
8 1⁄ 8
10
12
A
B
A
in
91⁄ 4
12
14
19
21 3⁄ 4
26 1⁄ 2
30
C
mm
70
83
102
159
206
241
mm
43
67
87
132
173
216
Weight
lbs.
kg .
37
17
57
26
98
45
252
114
441
200
787
357
C
in
mm
1 11⁄ 16
43
2 5⁄ 8
67
3 7⁄ 16
87
5 3⁄ 16
132
6 13⁄ 16 173
8 1⁄ 2
216
10 1⁄ 8
257
11 1⁄ 2
292
12 13⁄ 16 325
13 3⁄ 4
349
14 3⁄ 4
348
15 1⁄ 8
384
Weight
lbs.
kg .
37
17
70
32
112
51
262
119
488
221
917
416
1425
646
2045
928
2600 1179
3883 1761
5700 2580
7150 3236
in
1 11⁄ 16
2 5⁄ 8
3 7⁄ 16
5 3⁄ 16
6 13⁄ 16
8 1⁄ 2
B
C
mm
70
86
105
159
206
254
305
in
1 11⁄ 16
2 5⁄ 8
3 7⁄ 16
5 3⁄ 16
6 13⁄ 16
8 1⁄ 2
10 1⁄ 8
Weight
mm
lbs.
kg .
43
48
22
67
93
42
87 152
69
132 386
175
173 682
309
216 1421
645
257 2248 1020
7
WAFER CHECK VALVES, API 594
DUAL-PLATE CHECK VALVE
Retainerless Check Valves
High Performance Check Valve for Critical Applications
For critical applications, retainerless Dual-plate Check valves feature a one-piece body with no pin retainer
penetration through the body. These high performance valves utilize the same internal design of other Dual-plate
Check valves with all the unique features and advantages built into them.
C
1
7
4
8
Section C
1
C
5
6
A
A
4
Flow Direction
11
3 places
7
10
9
2
3
8
This view is rotated 90° to show the actual
operating position of the valve. The pin must
be vertical for horizontal flow.
Section A
Because Retainerless Dual-plate Check valves have no body
penetrations potential leak paths through the valve are eliminated.
This makes the Retainerless Dual-plate Check valves ideally suited
to meet the following critical service applications:
• Hydrocarbon processing
• Chemical processing
• Any industry concerned with fire hazards or environmental
safety.
Key features of the wafer check valve include:
• A wide selection of body and plate materials
• A choice of metal-to-metal or resilient sealing
• A full range of pressure classes and sizes
• A variety of end connections
• Designs available include wafer, lug and double flange
• Internals easily removed for field replacement under normal
inspections and maintenance procedures
The advanced design provides many operational benefits to
the user, which combined with its more compact size and lower
weight, make an excellent alternative to a standard swing check
valve.
Remarkable advantages include:
• Independent spring action (on 6” and larger) and plate
suspension on larger valves
• Free release flat seats
• Springs provide superior response to flow reversal or
deceleration
• Minimal water hammer
• Savings in purchase price and installation costs compared to
a conventional swing check valve
• Single body design with no body cartridge
8
Item No
Part No
1
2
3
4
5
6
7
8
9
10
11
Body
Plate
Seal
Stop Pin
Hinge Pin
Spring*
Pin Insert
Snap Ring
Body Bearing
Plate Bearing
Spring Bearing
* Independent spring in valve
sizes 6” and larger.
WAFER CHECK VALVES, API 594
DUAL-PLATE CHECK VALVE
TECHNICAL DATA
Class 125-150 Spring Cracking Pressure (PSI)
Valve Coefficient Cv
Valve Size
in
2"
2½
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
42"
48"
54"
60"
66"
72"
Class 125-300
mm
50
65
80
100
127
150
200
250
300
350
400
450
500
600
750
900
1050
1200
1350
1500
1650
1800
Valve Size
in
mm
2"
50
2½"
65
3"
80
4"
100
5"
127
6"
150
8"
200
10"
250
12"
300
14"
350
16"
400
18"
450
20"
500
24"
600
30"
750
36"
900
42"
1050
48"
1200
75
95
191
377
483
821
1,590
2,920
4,470
5,870
8,690
10,940
14,290
23,000
37,200
59,000
92,000
126,000
186,000
217,000
280,000
350,000
Std. Torque
Low Torque
Min. Torque
0.13
0.12
0.16
0.11
0.09
0.07
0.10
0.10
0.07
0.06
0.08
0.07
0.06
–
–
–
–
–
0.05
0.04
0.04
0.05
0.05
0.04
0.04
0.04
0.04
–
–
–
–
–
–
–
–
–
0.23
0.26
0.21
0.22
0.18
0.14
0.19
0.18
0.17
0.15
0.16
0.15
0.13
0.10
0.08
0.08
0.05
0.06
• Spring cracking pressure is an estimate of the pressure required to overcome the
spring force when valve is closed. This is not exact as valve cannot be used as a
relief valve. The use of low and min. torque springs could effect the valve performance
and should only be used when unique service conditions are evaluated.
• Valves 6" and larger have independent springs.
• Coefficients for sizes above 72"
please consult factory.
Spring & Drain Size Information
Body Drain Hole Sizes
Spring Selection Guide
Spring
Material
Operating Temperature Range
°C
°F
Type 316 S.S.
-129 to 120
-200 to 250
Inconel X-750
-250 to 537
-420 to 1000
®
(Available when specified)
ASME Class 125 (Cast Iron) Schedule A
1
2" – 8"
⁄ 8"
(50mm – 200mm)
(3.18mm)
3
10" – 12"
⁄ 8"
(250mm – 300mm)
(9.52mm)
• Spring materials are included in trim materials as an important part
of materials selection. The most common standard trim materials
are shown under Ordering Information.
• For unique service conditions, different torque springs as well as
other spring materials are available. Please consult factory.
14" & up
(350mm & up)
¾"
(19.1mm)
ASME Class 150-2500 Schedule B
2" - 2 ½"
¼"
(50mm – 65mm)
(6.35mm)
3
3" - 4"
⁄ 8"
(75mm – 100mm)
(9.52mm)
5"
½"
(125mm)
(12.7mm)
6" & up
(150 mm)
•
¾"
(19.1mm)
All drain holes are located on the downstream side of the valve.
9
WAFER CHECK VALVES, API 594
ORDERING CHART
Identification Code/Figure Number
The valve figure number consists of two groups of numbers and/or letters. The first group indicates the body, disc
and seat materials. The second indicates the spring material and type of ends. Any non-standard construction such
as different trim material, drain connections, etc., and any special features are indicated by a three digit suffix
number.
A2A4A2S9
Body, Flapper & Seat Material
Body C.S.
Body Seat
C.S.
MATERIALS
CODEMATERIAL
A1
Cast Iron
A2
Carbon Steel
A3
Ductile Iron
A4
316 Stainless
A5
410 Stainless
A6
Aluminum
A7
Hastelloy C276
A8
Aluminum Bronze
A9Titanium
A10
Low Temp Steel
A11
Monel
A12
Alloy 20
A13
22% Cr Duplex Stainless
A14
25% Cr Duplex Stainless
A15
304 Stainless
A16
5% Cr-0.5 Mo Steel
A17
9% Cr-1 Mo Steel
A18
Per P.O.
A19
1.25% Cr-0.5 Mo Steel
A20
6% Moly (6 Mo)
SPRINGS
CODE MATERIAL
MAX TEMP ºF
P1
316 SS
250
P2Inconel 600
P3
Inconel X-750 1000
P4Monel 400
P5
317 LSS
250
P6Hastelloy 800
P7
Inconel 625 1000
P8
Alloy 20
250
P9
Per P.O.
END CONNECTIONS
CODECONNECTION
E1
Special per P.O.
E2
Wafer RF
E3
Wafer RTJ
E4
Lug Drilled RF
E5
Lug Drilled RTJ
E6
Flanged RF
E7
Flanged RTJ
E8
Hub for Clamp Joint
(specify make)
E9
Lug Threaded RF
E10
Lug Threaded RTJ
E11
Wafer Flat Face
E12
Lug Flat Face
E13
Flange Flat Face
E14
Butt Weld
(specify pipe wall T)
10
MAX
TEMP
121
315
537
204
121
426
537
121
— XXX
Special Features
P1 E2
Body Seat Seal Face
Stellite
SPECS
A278 Class 30
A216 Gr. WCB
A395
A351 Gr. CF8M
A217 Gr. CA15
B26 Alloy ZC81A
A 494 Gr. CW-12MW
B148 Gr. 954
R50400
A352 Gr. LCC/A350 LF2
A296 Gr. M 35 W
A743 Gr. CN7M
A890 Gr. 4A
A890 Gr. 5A
A351 Gr. CF8
A217 Gr. C5
A217 Gr. C12
B148 Gr. 954
See suffix no.
A217-WC6
P1E2
Spring Material Type Of Ends
A2 A4 A2 S9
Flapper
316 SS
—
SEATING SURFACES
BODY SEAT SEAL FACE
CodeMaterial
S0
Same as Body
S1Buna-N
S2Neoprene
S3Viton
S4Silicone
S5TFE
S6
316 SS
S7
410 SS
S8Stellite
S9Monel
S10EPDM
Spring
316 SS
Ends
Wafer RF
FLAPPER SEAT ONLY
CodeMaterial
S0
Same as Flapper
S11Buna-N
S12Neoprene
S13Viton
S14Silicone
S15TFE
S16
316 SS
S17
410 SS
S18Stellite
S19Monel
S20EPDM
BODY & FLAPPER SEAT
CodeMaterial
S21Bronze
S22
316 SS
S23
410 SS
S24Stellite
S25Monel
S26
Hastelloy C
WAFER CHECK VALVES, API 594
Valves Principles – Valve Automation Specialist
MANUFACTURING DIVISION
No.16, Jinting Road, Shuige Industry,
Lishui City, Zhejiang Province,
323000 China
E-mail: info@fcvaltech.com
INTERNATIONAL HEAD QUARTER SALES OFFICE
Flow Control Group Holding Ltd
Room 102, No. 17
Lane 618, Huting North,
Songjiang, Shanghai,
201615 China
Mobile Contact: 86-13959376762
E-mail: info@fcvaltech.com
Website: www.fcvaltech.com
SOUTH EAST ASIA REGIONAL SALES OFFICE
OIL-TECH ENGINEERING PTE LTD
48, Toh Guan Road East,
#05-148, Enterprise Hub
Singapore 608586
Phone: 65-6515 1684
Fax: 65-6896 8056
E-mail: sales@oiltech-eng.com
Website: www.oiltech-eng.com
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11