Specialty Check Valves

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Specialty Check Valves
A
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Duo-Chek® High Performance Check Valves
2
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Duo-Chek® Valves
Duo-Chek® The High Performance Non-Slam Check Valve
Design Features and Benefits
Duo-Chek® high performance non-slam check valves are the original Mission Manufacturing Company wafer check valves
introduced to the market in the late 50's. The valve is available in the sizes, pressure classes and configurations required to
meet the most demanding of applications. Product range includes, but is not limited to:
• Sizes: 2" to 72"
• Body Materials:
• ASME Pressure Class 150 through 2500
• DIN, JIS, BS, AS, and ISO standards are also available
• Resilient Seat Materials:
• Wafer, lug, double flanged and extended body styles
• Wafer configurations available in retainered and
retainerless style
• Integral and overlaid metal seats also available
• Meets the requirements of ASME Section III, B16.10, B16.5,
B16.34, B16.47, API 594 and API 6D
Raised Face, Plain Face, Ring Joint,
Weld-End, Hub-End
Long-leg spring action
allows plates to open and
WCB Cast Steel, 316 Stainless Steel. All alloys
EPDM, Buna-N, Neoprene, Viton
• End Connections:
Spring action closes plates
independently. (6" and larger)
close without seat scrubbing.
Dual plate lightweight
design for efficient
seating and operation.
Hinge support sleeve reduces
friction and minimizes water
hammer through independent
plate suspension (on larger sizes).
3
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Duo-Chek® Valves
Two Piece Tilting Disc Check Valves ...to your Advantage
Design Features and Benefits
Leading engineers specify Duo-Chek® for check valve applications because it provides high performance.
Extensive research and testing with demonstrated performance has earned worldwide recognition,
unmatched in the industry.
The Duo-Chek® wafer valve design is generally stronger, lighter, smaller, more efficient and less
expensive than conventional swing check valves. Its design meets API 594 which is approximately
one fourth the face to face dimension and 15% to 20% the weight, on most popular sizes,
making them less expensive than a swing check valve. It is much easier to install between
standard gaskets and line flanges. Additional savings occur during installation due to ease
of handling and only one set of flange studs being required. The Duo-Chek® is more cost
effective to install, and also to maintain.
Duo-Chek® offers special design features that make it a high performance non-slam check valve. These include a scrub-free
opening, and in most sizes, a unique independent spring design. Larger sizes offer an independent plate support system. Other
configurations offered include lug, double flange and extended body.
Fs
F
F
Fs
Plates in closed
position. Top view.
Heel opens first
as flow begins.
Plates
fully opened (85°)
The innovative dual-plate design of Duo-Chek® employs two
spring-loaded plates (disc halves) suspended on a central
vertical hinge pin. As flow begins, the plates open in response
to a resultant force (F) which acts as the center of the sealed
surface area. The contact point of the reacting spring leg’s
force (Fs) acts beyond the center of the plate area, causing
the heel to open first. This prevents rubbing of the seal surface
prior to normal plate opening, eliminating wear.
As the velocity of flow decreases, torsion spring action reacts
automatically. This moves the plates closer to the body
seats, reducing the distance and time of travel for closure. By
having the plates closer to the body seats at the time of flow
reversal, the valve dynamic response is greatly accelerated.
This dramatically reduces the water hammer effect for nonslam performance.
At closing, the point of spring force causes the toe of the
plates to close first. This prevents dragging of the heels of the
plates and maintains seal integrity for much longer periods.
Plate toe closes first as
flow decreases.
Plates fully seated for
bubble-tight shutoff.
Independent Spring Design
Plate in
open
position
Spring with
valve wide
open
Spring with
valve closed
Plate in
closed position
55°
140°
Unstressed
spring
A spring design of the Duo-Chek® (sizes 6” and larger)
allows higher torque to be exerted against each plate with
independent closing in response to the process stream. Testing
has proved this action provides up to 25% improvement in
valve life and 50% reduction in water hammer.
Each of the dual plates has its own spring or springs, which
provide independent closing action. These independent
springs undergo less angular deflection, only 140° as
compared to 350° for conventional springs with two legs.
4
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Duo-Chek® Valves
Design Features and Benefits
Independent Plate Suspension Design
For sizes 24” and larger, the Duo-Chek unique hinge design reduces friction forces by 66%, which improves valve response
significantly. Support sleeves are inserted through the outboard hinges so that the upper hinge is independently supported
by the lower sleeve during valve operation.
This allows both plates to close at the same time for quick response, and excellent dynamic performance.
Comparison of Hinge Design with and without Independent Plate Suspension (IPS)
This analysis shows the reduction of frictional force on the bottom plate of the Duo-Chek.
Weight of the Plate (left or right) = W, Coeff. of Friction = µ
Coefficient of Friction = µ
Hinge Design without IPS
Hinge Design with IPS
W
W
FTop = μ(0)W
FTop = μ(1)W
Surface
in contact
W FBottom = μ(2)W
W FBottom = μ(1)W
Surface
in contact
Total Friction on Bottom Plate = Ff
Total friction Force on Bottom Plate = Ff
Ff = FTop + FBottom
Ff = µ(1)W
= µ(1)W + µ(2)W
= µ(3)W
With the Duo-Chek independent suspension, the friction
force on the bottom plate is reduced by two-thirds (66%)
5
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Duo-Chek® Valves
Design Features and Benefits
Features
Lightweight and Compact Wafer Design
Benefits
Installs between mating flanges with 10 to 20% the weight of flanged swing
checks in popular sizes - Saves money in initial valve cost and provides
lower installation cost.
Dual Plate, Flat Seat Design
Plate heel is lifted first by design to prevent seat wear. Gives superior
performance and tight shutoff with resilient seats.
Independent Spring Action
Maximum deflection of 140°, provides improved valve response and
longer life - Saves money with longer valve life and improved system
performance by reducing water hammer.
Independent Plate Suspension with Unique Improves valve response and reduces friction forces by 66% - Further
Hinge Design (larger sizes)
assurances of non-slam performance with faster valve response.
Simple, External Body Geometry
Configuration simplifies valve insulation - Saves money.
Variety of Body Designs Available - Lug and Provides options to suit application needs - Eases your selection process
Double Flange
by utilizing the industry leader as your single source.
Wide Variety of Materials
Versatility for many services - Satisfies more application needs.
Body Strength and Rigidity
Some sizes suitable for horizontal or vertical up positions - Simplifies
piping design, eliminates constraints that swing checks create.
Flexibility in Installation Position
Provides more rigidity than pipe, eliminating concerns of pipe bending
loads of flanged valves - Safety against thermal or seismic catastrophes.
Vertical Hinged Design
In horizontal position flow allows plates to function freely and full open
under lower flow conditions as compared to swing check - Reduces
pressure loss, improves dynamic response and eliminates valve
chatter.
6
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Duo-Chek® Valves
Components and Materials of Construction
4
3
9
A
7
A
10
4
VIEW B-B
B
B
5
6
11
1
FLOW
12
Item No.
SECT. A-A
2
Part Name
CS Valves
SS Valves
1
Body
A216 GR WCB
A351 GR CF8M
2
Plate
A216 GR WCB
A351 GR CF8M
3
Stop Pin Retainer
A105
A479 TP 316
4
Hinge Pin Retainer
A105
A479 TP 316
5
Stop Pin
A479 TP 316
A479 TP 316
6
Hinge Pin
A479 TP 316
A479 TP 316
7
Spring
Stainless Steel
Stainless Steel
8
Body Lug Bearing
Stainless Steel
Stainless Steel
9
Plate Lug Bearing
Stainless Steel
Stainless Steel
10
Spring Bearing
Stainless Steel
Stainless Steel
11
Name Plate
Stainless Steel
Stainless Steel
12
Seat
Various
Various
Note: Above table represents typical materials of construction. Actual material will meet customer requirements.
7
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Duo-Chek® Valves
Style H High Performance Check Valve for Critical Applications
For critical applications, Style H retainerless Duo-Chek valves Style H feature a onepiece body with no pin retainer penetration through the body.
These high performance valves utilize the same internal design of other Duo-Chek®
valves with all the unique features and advantages built into them.
Item No.
1
2
3
4
5
6
7
8
9
10
11
Part No.
Body
Plate
Seal
Stop Pin
Hinge Pin
Spring*
Pin Insert
Snap Ring
Body Bearing
Plate Bearing
Spring Bearing
1
7C
Section
4
8
Section C
C
1
7
4
8
1
C
A
C
5
1
6 A
C
5
6
A
4
A
11
3 places
7
11
3 places
7
10
9
Flow Direction
10
9
4
2
3
8
2
3
8
This view is rotated 90° to show the actual
Flow Direction
operating position of the valve. The pin must
be vertical for horizontal flow.
This view is rotated 90° to show the actual
Sectionoperating
A
position of the valve. The pin must
be vertical for horizontal flow.
Section A
* Independent spring in
valve sizes 6” and larger.
Because Retainerless Duo-Chek® valves have no body
penetrations, potential leak paths through the valve are
eliminated. This makes the Retainerless Duo-Chek® ideally
suited for critical service applications.
Key features of the Duo-Chek® Retainerless Check valve Style
H include:
• A wide selection of body and plate materials
The advanced design of the Duo-Chek® provides many
operational benefits to the user, which, combined with its
more compact size and lower weight, make the Duo-Chek®
Retainerless Check valve Style H an excellent alternative to a
standard swing check valve.
Remarkable advantages include:
• A choice of metal-to-metal or resilient sealing
• Independent spring action (on 6" and larger) and plate
suspension on larger valves
• A full range of pressure classes and sizes
• Free release flat seats
• A variety of end connections
• Springs provide superior response to flow reversal or
deceleration
• Designs available include wafer, lug and double
flange
• Internals easily removed for field replacement
under normal inspections and maintenance
procedures
• 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
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Duo-Chek® Valves
Style G Installation Dimensions
B
D
A
Ring Joint
Facing
A
A
Flow Direction
C
Serrated
This view is rotated 90° to show the actual
operating position of the valve. The pin must
be vertical for horizontal flow.
Minimum
Flange
Bore
Raised Face
Valves Only
Plain Face
(Class 125 only)
Section A
Style G wafer body w\valves are designed with flangeless bodies with
relatively short face-to-face dimensions. They are clamped between mating
flanges which are connected by studs and nuts.
ASME Class 150
Size
A
B
C
D
Weight
in
mm
in
mm
in
mm
in
mm
in
mm
lbs.
kg.
2"
2 1⁄2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
42"
48"
54"
60"
66"
72"
50
65
80
100
125
150
200
250
300
350
400
450
500
600
750
900
1050
1200
1350
1500
1650
1800
4 1⁄8
4 7⁄8
5 3⁄8
6 7⁄8
7 3⁄4
8 3⁄4
11
13 3⁄8
16 1⁄8
17 3⁄4
20 1⁄4
21 5⁄8
23 7⁄8
28 1⁄4
34 3⁄4
41 1⁄4
48
54 1⁄2
61
67 1⁄2
74 1⁄4
80 3⁄4
105
124
137
175
197
222
279
340
410
451
514
549
606
718
883
1048
1219
1384
1549
1715
1886
2051
2 3⁄8
2 5⁄8
2 7⁄8
2 7⁄8
3 3⁄8
3 7⁄8
5
5 3⁄4
7 1⁄8
7 1⁄4
7 1⁄2
8
8 5⁄8
8 3⁄4
13
15 1⁄4
17
20 5⁄8
21 1⁄4
26
31
36
60
67
73
73
86
98
127
146
181
184
191
203
219
222
330
387
432
524
540
660
787
914
1 15⁄16
2 11⁄32
2 29⁄32
3 53⁄64
4 13⁄16
5 49⁄64
7 5⁄8
9 9⁄16
11 3⁄8
12 1⁄2
15
16 7⁄8
18 13⁄16
22 5⁄8
29 1⁄4
35
41
47
51 1⁄2
56
65 1⁄4
68
49
60
74
97
122
146
194
243
289
318
381
429
478
575
743
889
1041
1194
1308
1422
1657
1727
–
–
1
⁄4
5
⁄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
9
1115⁄16
15
16 3⁄4
19 3⁄4
–
–
–
–
–
6
16
22
35
54
70
83
83
113
137
160
210
229
303
381
425
502
–
­–
–
6
10
13
17
27
35
70
106
172
200
275
315
435
620
1230
2017
2800
3920
6172
7800
12000
14000
3
5
6
8
12
16
32
48
78
91
125
143
197
281
558
915
1270
1178
2800
3538
5443
6350
Meets Design Requirements of ASME Section III, B16.34, B16.5, B16.25, and B16.10”
9
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Duo-Chek® Valves
Style G Installation Dimensions, cont’d
ASME Class 300
Size
ASME Class 900
A
B
C
D
Weight
in
mm
in
mm
in
mm
in
mm
in
2"
50
4 3⁄8
111
2 3⁄8
60
1 15⁄16
49
–
–
2 1⁄2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
42"
48"
65
80
100
125
150
200
250
300
350
400
450
500
600
750
900
1050
1200
60
74
97
122
146
194
243
289
318
364
429
456
548
730
889
1041
1194
–
1
⁄4
5
⁄8
7
⁄8
1 3⁄8
2 1⁄8
2 3⁄4
3 1⁄4
3 3⁄16
4 1⁄8
4 13⁄16
5 5⁄8
7 1⁄16
9 1⁄16
11 3⁄16
14 3⁄4
16 1⁄2
–
6
16
22
35
54
70
83
81
105
122
143
179
230
284
375
419
5 1⁄8 130 2 5⁄8
5 7⁄8 149 2 7⁄8
7 1⁄8 181 2 7⁄8
8 1⁄2 216 3 3⁄8
9 7⁄8 251 3 7⁄8
5
12 1⁄8 308
14 1⁄4 362 5 3⁄4
16 5⁄8 422 7 1⁄8
19 1⁄8 486 8 3⁄4
21 1⁄4 540 9 1⁄8
23 1⁄2 597 10 3⁄8
25 3⁄4 654 11 1⁄2
30 1⁄2 775 12 1⁄2
37 1⁄2 953 14 1⁄2
44 1118 19
50 3⁄4 1289 22 3⁄8
58 3⁄4 1492 24 3⁄4
67 2 11⁄32
73 2 29⁄32
73 3 53⁄64
86 4 13⁄16
98 5 49⁄64
127 7 5⁄8
146 9 9⁄16
181 11 3⁄8
222 12 1⁄2
232 14 5⁄16
264 16 7⁄8
292 17 15⁄16
318 21 9⁄16
368 28 3⁄4
483
35
568
41
629
47
mm lbs.
7
in
mm
2"
2 1⁄2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
42"
50
65
80
100
125
150
200
250
300
350
400
450
500
600
750
900
1050
A
in
B
mm
in
4 3⁄8 111 2 3⁄8
5 1⁄8 130 2 5⁄8
5 7⁄8 149 2 7⁄8
7 5⁄8 194 3 1⁄8
9 1⁄2 241 4 1⁄8
10 1⁄2 267 5 3⁄8
12 5⁄8 321 6 1⁄2
15 3⁄4 400 8 3⁄8
18
457
9
19 3⁄8 492 10 3⁄4
12
22 1⁄4 565
24 1⁄8 613 14 1⁄4
26 7⁄8 683 14 1⁄2
31 1⁄8 791 17 1⁄4
38 1⁄4 972 18 7⁄8
44 1⁄2 1130 25
51 1295 27 5⁄8
C
mm
in
60 1 15⁄16
67 2 11⁄32
73 2 29⁄32
79 3 53⁄64
105 4 13⁄16
136 5 49⁄64
165 7 5⁄8
213 9 9⁄16
229 11 3⁄8
273 12 1⁄2
305 14 5⁄16
362 16 1⁄8
368 17 15⁄16
438 21 9⁄16
398 28 3⁄4
635 33 3⁄4
702 39 1⁄2
D
mm
in
49
60
74
97
122
146
194
243
289
318
364
410
456
548
730
857
1003
–
1
⁄8
1
⁄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
9 9⁄16
11 15⁄16
14 1⁄4
Meets Design Requirements of ASME Section III,
B16.34, B16.5, B16.25, and B16.10”
C
D
mm
in
mm
in
mm
3
2"
50
5 5⁄8
143
2 3⁄4
70
1 11⁄16
43
–
–
2 1⁄2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
65
80
100
125
150
200
250
300
350
400
950
500
600
6 1⁄2
6 5⁄8
8 1⁄8
9 3⁄4
11 3⁄8
14 1⁄8
17 1⁄8
19 5⁄8
20 1⁄2
22 5⁄8
25 1⁄8
27 1⁄2
33
165
168
206
248
289
359
435
498
521
575
638
699
838
3 1⁄4
3 1⁄4
4
–
6 1⁄4
8 1⁄8
9 1⁄2
11 1⁄2
14
15 1⁄8
17 3⁄4
17 3⁄4
19 1⁄2
83
2 1⁄8
83
2 5⁄8
102 3 7⁄16
–
4 5⁄16
159 5 3⁄16
206 6 13⁄16
241 8 1⁄2
292 10 1⁄8
356 11 1⁄2
384 12 13⁄16
451 14 7⁄16
451 17 15⁄16
495 21 1⁄2
54
67
87
110
132
173
216
257
292
325
367
456
546
⁄16
5
⁄16
9
⁄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
2
8
14
–
27
36
46
59
51
67
65
135
143
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
3375 1531
6300 2858
8447 3832
in
Weight
in
Weight
–
3
6
22
25
36
51
58
88
70
110
94
135
167
243
303
362
B
mm
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
2050 930
3573 1621
5780 2622
6572 2981
mm lbs.
A
in
ASME Class 600
Size
Size
kg.
mm lbs.
1
14
kg.
6
16
7
24
11
40
18
–
–
115
52
229 104
388 176
540 245
926 420
1152 523
1318 598
1426 647
2729 1238
ASME Class 1500
Size
A
B
in
mm
in
mm
in
2"
2 1⁄2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
50
65
80
100
125
150
200
250
300
350
400
450
500
600
5 ⁄8
6 1⁄2
6 7⁄8
8 1⁄4
10
11 1⁄8
13 7⁄8
17 1⁄8
20 1⁄2
22 3⁄4
25 1⁄4
27 3⁄4
29 3⁄4
35 1⁄2
143
165
175
210
254
283
352
435
521
578
641
705
756
902
2 ⁄4
3 1⁄4
3 1⁄4
4
–
6 1⁄4
8 1⁄8
9 3⁄4
12
14
15 1⁄8
18 7⁄16
21
22
5
C
mm
in
70 1 ⁄16
83
2 1⁄8
83
2 5⁄8
102 3 7⁄16
–
4 5⁄16
159 5 3⁄16
206 6 13⁄16
248 8 1⁄2
305 10 1⁄8
356 11 1⁄2
384 12 13⁄16
468 13 3⁄4
533 14 3⁄4
559 15 1⁄8
3
11
D
mm
in
43
54
67
87
110
132
173
216
257
292
325
349
375
384
–
⁄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
Weight
mm lbs.
–
2
8
14
–
27
36
43
57
51
67
68
102
105
1
kg.
14
6
16
7
25
11
43
20
–
–
110
50
219
99
397 180
725 329
948 430
1380 627
1900 863
2750 1247
5860 2658
ASME Class 2500
Size
A
B
C
D
in
mm
in
mm
in
mm
in
mm
in
2"
2 1⁄2"
3"
4"
5"
6"
8"
10"
12"
50
65
80
100
125
150
200
250
300
5 ⁄4
6 5⁄8
7 3⁄4
9 1⁄4
11
12 1⁄2
15 1⁄4
18 3⁄4
21 5⁄8
146
168
197
235
279
318
387
476
549
2 ⁄4
3 1⁄4
3 3⁄8
4 1⁄8
–
6 1⁄4
8 1⁄8
10
12
70
83
86
105
–
159
206
254
305
1 ⁄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
43
54
67
87
110
132
173
216
257
–
⁄16
1
⁄4
7
⁄16
–
1 1⁄16
1 11⁄16
1 13⁄16
2 3⁄16
3
3
11
1
Weight
mm lbs.
–
2
6
11
–
27
43
46
56
15
22
31
54
–
190
285
502
963
kg.
7
10
14
25
–
86
129
228
437
10
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Duo-Chek® Valves
Style H Double Flange Retainerless Valve
Double Flanged Style Valves bolt up is similar to a bolted cap swing check or gate valve. Double flanged versions are
offered as standard on larger size valves where the lay length of the body permits installation of two heavy nuts between the
flanges. These valves are standard retainerless design.
B
A
Pin must be vertical
for horizontal flow.
ASME Class 150
Size
in
mm
8"
200
10"
250
12"
300
14"
350
16"
400
18"
450
20"
500
24"
600
30"
750
36"
900
42"
1050
48"
1200
54"
1350
60"
1500
66"
1650
72"
1800
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
B
mm
343
406
483
533
597
635
699
813
984
1168
1346
1511
1683
1854
2032
2197
in
5
5 3⁄4
7 1⁄8
7 1⁄4
7 1⁄2
8
8 5⁄8
8 3⁄4
12
14 ½
17
20 5⁄8
21 1⁄4
26
31
36
C
mm
127
146
181
184
191
203
219
222
305
368
432
524
539
660
787
914
in
7 5⁄8
9 9⁄16
11 3⁄8
12 1⁄2
15
16 7⁄8
18 7⁄8
22 5⁄8
29 1⁄4
35
41
47
51 1⁄2
56
62 1⁄2
68
mm
181
222
232
264
292
318
368
483
568
629
692
826
in
11 3⁄8
12 1⁄2
14 3⁄8
16 1⁄8
17 7⁄8
22 1⁄8
28 3⁄4
35
41
47
51 1⁄2
56
mm
194
243
289
318
381
428
480
575
743
889
1041
1194
1308
1422
1588
1727
Weight
lbs.
kg.
93
42
189
86
308
140
352
160
496
225
551
250
661
300
860
389
1512
687
2525 1145
4163 1888
5880 2667
–
–
–
–
–
–
–
–
mm
289
318
365
409
454
562
730
864
1041
1193
1308
1422
Weight
lbs.
kg.
336
152
431
195
619
280
850
385
1078
488
1516
686
3100 1406
4650 2109
8670 3932
9950 4513
–
–
–
–
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
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
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
C
Flow Direction
ASME Class 600
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
9
10 3⁄4
12
14 1⁄4
14 1⁄2
17 1⁄4
19 7⁄8
25
27 37⁄64
31
C
mm
229
273
305
362
368
438
505
635
701
787
in
11 3⁄8
12 1⁄2
14 3⁄8
16 1⁄8
18
21 9⁄16
28 3⁄4
33 3⁄4
39 1⁄2
36
mm
292
356
384
451
451
495
635
711
800
in
10 1⁄8
11 1⁄2
12 7⁄8
14 1⁄2
18
21 1⁄2
26
31
36
mm
289
318
365
409
457
548
730
857
1003
914
Weight
lbs.
kg.
612
277
826
375
951
430
1433
650
1763
800
2755 1250
5070 2300
7605 3450
9985 4529
12600 5715
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
–
–
–
–
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
B
mm
610
641
705
787
857
1041
1232
1461
1562
in
11 1⁄2
14
15 1⁄8
17 3⁄4
17 3⁄4
19 1⁄2
25
28
31 1⁄2
C
Notes:
• Sizes not available in double flange design are offered as lug body design, see page 12.
• Please consult factory for other sizes and pressure classes available.
• Consult factory for dimensions and weights not shown.
Meets Design Requirements of ASME Section III,
B16.34, B16.5, B16.25, and B16.10”
11
www.cranenuclear.com
Duo-Chek® Valves
Style H Lug Retainerless Valve
Lug Style valves cover the bolting the entire length of the body. Lug valves are furnished in scallop and full body designs.
Scallop is furnished whenever possible to keep weight to a minimum. These valves are standard retainerless design. Lug
valves are furnished with thru-hole bolting in accordance with API 594. Threaded bolt holes are available but non standard
B
as valve is not designed nor should be used for dead-end service.
Thru hole
A
C
Threaded
Scallop
Full Body
Flow Direction
Pin must be vertical
for horizontal flow.
ASME Class 150
Size
in
mm
2"
50
2 1⁄2"
65
3"
80
4"
100
5"
125
6"
150
ASME Class 900
A
in
6
7 1⁄2
8 1⁄4
9
10
11
B
mm
152
191
210
229
254
279
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
mm
49
60
74
97
122
146
Weight
lbs.
kg.
17
8
17
8
17
8
28
13
36
16
48
22
mm
49
60
74
97
122
146
194
243
Weight
lbs.
kg.
18
8
22
10
30
14
36
16
51
23
84
38
135
61
270
123
mm
49
60
74
97
146
194
243
Weight
lbs.
kg.
18
8
22
10
30
14
50
23
183
83
295
134
540
245
ASME Class 300
Size
in
mm
2"
50
2 1⁄2"
65
3"
80
4"
100
5"
125
6"
150
8"
200
10"
250
B
mm
152
191
210
254
279
318
381
445
in
2 3⁄8
2 5⁄8
2 7⁄8
2 7⁄8
3 3⁄8
3 7⁄8
5
5 3⁄4
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
137
165
213
in
1 15⁄16
2 11⁄32
2 29⁄32
3 53⁄64
5 49⁄64
7 5⁄8
9 9⁄16
ASME Class 600
Size
in
mm
2"
50
2 1⁄2"
65
3"
80
4"
100
6"
150
8"
200
10"
250
A
in
6
7 1⁄2
8 1⁄4
10 3⁄4
14
16 1⁄2
20
B
mm
152
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
• Consult factory for additional sizes and pressure classes.
12
A
in
81⁄2
91⁄2
111⁄2
15
181⁄2
211⁄2
B
mm
216
241
292
381
470
546
in
2 3⁄4
3 1⁄4
4
6 1⁄4
8 1⁄8
9 1⁄2
C
mm
70
83
102
159
206
241
in
1 11⁄16
2 5⁄8
3 7⁄16
5 3⁄16
6 13⁄16
8 1⁄2
mm
70
83
102
159
206
248
305
356
384
468
533
559
in
1 11⁄16
2 5⁄8
3 7⁄16
5 3⁄16
6 13⁄16
8 1⁄2
10 1⁄8
11 1⁄2
12 13⁄16
13 3⁄4
14 3⁄4
15 1⁄8
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
mm
43
67
87
132
173
216
Weight
lbs.
kg.
37
17
57
26
98
45
252
114
441
200
787
357
mm
43
67
87
132
173
216
257
292
325
349
348
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
mm
43
67
87
132
173
216
257
Weight
lbs.
kg.
48
22
93
42
152
69
386
175
682
309
1233
559
1881
853
ASME Class 1500
A
in
6
7 1⁄2
8 1⁄4
10
11
12 1⁄2
15
17 1⁄2
Size
in
mm
2"
50
3"
80
4"
100
6"
150
8"
200
10"
250
Meets Design Requirements of ASME Section III,
B16.34, B16.5, B16.25, and B16.10”
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
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
B
mm
216
267
311
394
483
584
673
749
826
914
984
1168
in
2 3⁄4
3 1⁄4
4
6 1⁄4
8 1⁄8
9 3⁄4
12
14
15 1⁄8
18 7⁄16
21
22
C
ASME Class 2500
Size
in
mm
2"
50
3"
80
4"
100
6"
150
8"
200
10"
250
12"
300
A
in
91⁄4
12
14
19
21 3⁄4
26 1⁄2
30
B
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
C
www.cranenuclear.com
Duo-Chek® Valves
Dimensional Tables - Style G and H Stud Selection
Raised face flanges
C
Min
B
D
Min
Ring joint flanges
ASME Class 150
Valve Size
in
mm
2"
2 1⁄2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
42"
48"
54"
60"
66"
72"
50
65
80
100
125
150
200
250
300
350
400
450
500
600
750
900
1050
1200
1350
1500
1650
1800
No. of
Studs
4
4
4
8
8
8
8
12
12
12
16
16
20
20
28
32
36
44
44
52
52
60
B
C
D
Bolt Diameter
Raised Face
Ring Joint
mm
in
mm
in
mm
in
⁄8
⁄8
5
⁄8
5
⁄8
3
⁄4
3
⁄4
3
⁄4
7
⁄8
7
⁄8
1
1
1 1⁄8
1 1⁄8
1 1⁄4
1 1⁄4
1 1⁄2
1 1⁄2
1 1⁄2
1 3⁄4
1 3⁄4
1 3⁄4
1 1⁄8
16
16
16
16
19
19
19
22
22
25
25
29
29
32
32
38
38
38
44
44
44
29
5 ⁄4
6 1⁄4
6 3⁄4
6 3⁄4
7 1⁄2
8
9 1⁄2
10 1⁄2
12
12 3⁄4
13 1⁄4
14 1⁄4
15
15 3⁄4
21 1⁄4
26 1⁄4
28 1⁄2
33
35
–
–
–
146
159
171
171
191
203
241
267
305
324
337
362
381
400
540
667
724
838
889
–
–
–
6 ⁄4
7
7 1⁄4
7 1⁄4
8
8 1⁄2
10
11
12 1⁄2
13 1⁄4
13 3⁄4
14 3⁄4
15 1⁄2
16 1⁄4
22 3⁄4
39
–
–
–
–
–
–
159
178
184
184
203
216
254
279
318
337
349
375
394
413
578
679
–
–
–
–
–
–
5
5
3
1
Stud dimensions apply to styles G & H for Lug style thru-hole bolting design.
Meets Design Requirements of ASME Section III, B16.34, B16.5, B16.25, and B16.10”
13
www.cranenuclear.com
Duo-Chek® Valves
Dimensional Table - Styles G and H Stud Selection
ASME Class 300
Valve Size
in
2"
2 1⁄2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
42"
48"
mm
50
65
80
100
125
150
200
250
300
350
400
450
500
600
750
900
1050
1200
No. of
Studs
8
8
8
8
8
12
12
16
16
20
20
24
24
24
28
32
36
40
ASME Class 900
B
Bolt Diameter
in
mm
5
⁄8
16
3
⁄4
19
3
⁄4
19
3
⁄4
19
3
⁄4
19
3
⁄4
19
7
⁄8
22
1
25
29
1 1⁄8
29
1 1⁄8
32
1 1⁄4
32
1 1⁄4
32
1 1⁄4
38
1 1⁄2
44
1 3⁄4
2
51
2
51
2
51
C
Raised Face
in
mm
6
152
6 3⁄4
171
7
178
7 1⁄2
191
8 1⁄4
210
9
229
10 1⁄2
267
311
12 1⁄4
14
356
16
406
17
432
18 1⁄2
470
19 3⁄4
502
21 3⁄4
552
27 1⁄4
692
819
32 1⁄4
927
36 1⁄2
40
1016
D
Ring Joint
in
mm
6 3⁄4
171
7 1⁄2
191
8
203
8 1⁄4
210
9
229
9 3⁄4
248
11 1⁄4
286
13
330
14 3⁄4
375
16 3⁄4
425
17 3⁄4
451
19 3⁄4
489
20 1⁄2
521
22 3⁄4
578
28 1⁄2
724
15 1⁄2
851
37 3⁄4
959
-
B
Bolt Diameter
in
mm
5⁄8
16
3⁄4
19
3⁄4
19
7⁄8
22
1
25
1
25
11⁄8
29
1¼
32
1¼
32
13⁄8
35
1½
38
15⁄8
41
15⁄8
41
17⁄8
48
2
51
21⁄2
64
23⁄4
70
C
Raised Face
in
mm
6¾
171
7½
191
8
203
9¼
235
10¾
273
12¼
311
14¼
362
17
432
18
457
20¼
514
22¼
565
25¼
641
26
660
30¼
768
34¼
870
41
1041
47
1194
D
Ring Joint
in
mm
7
178
7¾
197
8¼
210
9¼
235
11
279
12½
318
14½
368
17¼
438
18
457
20½
521
22½
572
25½
648
26¼
667
30¾
781
34¾
883
20½
1060
47½
1207
ASME Class 600
Valve Size
in
2"
2 ½"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
42"
mm
50
65
80
100
125
150
200
250
300
350
400
450
500
600
750
900
1050
No. of
Studs
8
8
8
8
8
12
12
16
20
20
20
20
24
24
28
28
28
* Stud dimensions apply to style G for Lug style thru-hole bolting design.
14
Valve Size
in
2"
2 1⁄2"
3"
4"
6"
8"
10"
12"
14"
16"
18"
20"
24"
mm
50
65
80
100
150
200
250
300
350
400
450
500
600
No. of
Studs
8
8
8
8
12
12
16
20
20
20
20
20
20
B
Bolt Diameter
in
mm
7⁄8
22
1
25
7⁄8
22
11⁄8
29
11⁄8
29
13⁄8
35
13⁄8
35
13⁄8
35
38
11⁄2
15⁄8
41
17⁄8
48
2
51
64
21⁄2
C
Raised Face
in
mm
8¾
222
9¾
248
9¼
235
11
279
14
356
17
432
19
483
21¾
552
25
635
26¾
679
30¾
781
800
311⁄2
36¾
933
D
Ring Joint
in
mm
8¾
222
9¾
248
9¼
235
11
279
14¼
362
17¼
438
19
483
21¾
552
251⁄2
648
27
686
800
311⁄2
32¼
819
37¼
946
B
Bolt Diameter
in
mm
7
⁄8
22
1
25
29
11⁄8
32
11⁄4
35
13⁄8
41
15⁄8
48
17⁄8
2
51
57
21⁄4
64
21⁄2
70
23⁄4
3
76
89
31⁄2
C
Raised Face
in
mm
83⁄4
222
93⁄4
248
101⁄2
267
12
305
163⁄4
425
193⁄4
502
231⁄4
591
27
686
301⁄4
768
33
838
383⁄4
965
1111
433⁄4
48
1219
D
Ring Joint
in
mm
83⁄4
222
93⁄4
248
101⁄2
267
12
305
163⁄4
425
201⁄4
514
231⁄2
597
705
273⁄4
311⁄4
794
34
864
39
900
443⁄4
1137
491⁄4
1251
B
Bolt Diameter
in
mm
1
25
11⁄8
29
1¼
32
1½
38
2
51
2
51
2½
64
2¾
70
C
Raised Face
in
mm
10
254
11¼
286
12¼
311
14¼
362
20
508
23¾
603
29¼
743
33¼
845
D
Ring Joint
in
mm
10
254
11¼
286
12½
318
14¾
375
20½
521
24
610
30¼
768
34¼
870
ASME Class 1500
ValveSize
in
2"
21⁄2"
3"
4"
6"
8"
10"
12"
14"
16"
18"
20"
24"
mm
50
65
80
100
150
200
250
300
350
400
450
500
600
No. of
Studs
8
8
8
8
12
12
12
16
16
16
16
16
16
ASMEClass 2500
ValveSize
in
2"
2½"
3"
4"
6"
8"
10"
12"
mm
50
65
80
100
150
200
250
300
No. of
Studs
8
8
8
8
8
12
12
12
Meets Design Requirements of ASME Section III,
B16.34, B16.5, B16.25, and B16.10”
www.cranenuclear.com
Duo-Chek® Valves
Technical Data
Valve Coefficient Cv
Class 150 Spring Cracking Pressure (PSI)
Valve Size
in
2”
2 1/2”
3”
4”
5”
6”
8”
10”
12”
14”
16”
18”
20”
24”
30”
36”
42”
48”
54”
60”
66”
72”
Class 150
mm
50
65
80
100
127
150
200
250
300
350
400
450
500
600
750
900
1050
1200
1350
1500
1650
1800
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
Valve Size
in
mm
2”
50
2 1/2”
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
Std. Torque Low Torque
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
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
-
Min.
Torque
0.05
0.04
0.04
0.05
0.05
0.04
0.04
0.04
0.04
-
• 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 affect 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 (Available when specified)
Spring Selection Guide
Spring Material
ASME Class 150-2500 Schedule B
Operating Temperature Range
°C
°F
°C
°F
2” - 2½” (50mm - 65mm)
¼” (6.35mm)
Type 316 S.S.
-129 to 120
-200 to 250
3” - 4” (75mm - 100mm)
3/8” (9.52mm)
Inconel® X-750
-250 to 537
-420 to 1000
5” (125mm)
½” (12.7mm)
6” & up (150 mm)
¾” (19.1mm)
• 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.
• All drain holes are located on the downstream side of the valve.
15
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Duo-Chek® Valves
Technical Data
Pressure Loss Information
• The curves show pressure loss applicable for Duo-Chek® in a horizontal flow with standard torque springs.
• Duo-Chek® valves should be installed in horizontal flow with pins oriented vertically for best performance. For other
installations, please contact the factory.
• Each piping system has a unique geometry which should be evaluated whenever the liquid media velocity exceeds 8
feet/second (2.4m/sec) through a swage or expansion (15° or greater included angle) directly upstream of the valve. For
maximum service life, a minimum of one (1) to five (5) pipe diameters distance should be maintained between the valve
and the pump discharge or pipe fittings (swages or expansion).
• Systems with severe flow decelerations may require higher torque springs for faster valve response, reducing water hammer
for non-slam applications. Please consult the factory.
• We can evaluate Duo-Chek® valves relative to your system behavior.
66"
72"
60"
48"
54"
42"
36"
30"
24"
20"
16"
18"
14"
21
2" V
ALV
3.0
2.0
40000
50000
60000
70000
100000
200000
300000
400000
500000
600000
700000
1000000
3154
3785
4416
6308
12616
18924
25232
31540
37848
44156
63080
30000
1892
2523
20000
1262
LITERS PER SECOND
10000
378
442
315
252
189
126
63
44
38
32
25
19
13
6
3.8
4.4
3.2
2.5
1.9
1.3
0.6
GALLONS PER MINUTE
631
6000
7000
5000
4000
3000
2000
0.1
700
0.03
LOSSES SHOWN BASED ON WATER AT 60°F WITH SP. GR. OF 1.0
1000
0.2
600
0.06
500
0.3
400
0.4
0.09
300
0.5
0.12
200
0.15
100
0.7
0.6
60
70
1.0
50
0.3
0.21
0.18
40
0.6
4.0
30
0.9
5.0
20
1.2
HEAD LOSS IN FEET OF WATER
1.5
7.0
6.0
10
HEAD LOSS IN METERS OF WATER
10
3.0
2.1
1.8
12"
20
10"
6.1
8"
30
5"
40
9.1
6"
50
12.2
4"
70
60
15.2
3"
100
21.3
18.3
E
30.5
/2"
Pressure Loss Chart (Class 125 - 300)
16
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Duo-Chek® Valves
Ordering Number System
Figure Number System
Size
Style
Pressure
Class
Body &
Plate
Seal
24”
G
15
S
P
Modification
End
Body
Number
Connection Configuration
F
-
3
9
DESCRIPTION: 24" Style G, ASME Class 150, Carbon Steel
Body, Metal Seal, Raised Face Flanges, with Double Flange
Body, (modification number indicates Inconel® X spring)
Valve Size
Nominal valve sizes are expressed in inches or millimeters.
Style
Ordering Letter
Body Type
Size Range
G
Wafer, Standard Design
2" through 88"
(50mm through 2200mm)
H
Retainerless Duo-Chek® Design
Wafer, Lug or Double Flange
2" through 88"
(50mm through 2200mm)
X
Extended Body Design
10" through 54"
(150mm through 1350mm)
Pressure Classes
ASME
Ordering No.
Class
15
150
30
300
60
600
90
900
150
1500
250
2500
17
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Duo-Chek® Valves
Ordering Number System (cont.)
Body and Plates
Ordering
Letter
B
AB
C
F
G
H
K
L
M
S
Material
Specification
Aluminum Bronze
Ni-Aluminum Bronze
316 Stainless Steel
Alloy 20
Low Temp. C.S.
Cast Iron with
Al. Br. Plates
Hastelloy® C
C12 Alloy Steel
Monel®
Carbon Steel
ASTM B148, Alloy 952
ASTM B148, Alloy 958
ASTM A351, Gr. CF-8M
ASTM A351, Gr. CN7M
ASTM A352, GR LCB
ASTM A126, class 40
ASTM B148, (952)
A494, Gr. CW12MW
ASTM A217, Gr. C12 (9% Cr)
ASTM A494, Gr. M30C
ASTM A216, Gr. WCB
Seal1
Ordering
Letter
A
M
N
P
S
V
Material
EPDM
Buna-N
Neoprene
As Body
Silicone
Viton-B®
Ordering
Letter
T
U
V
Y
Z
CA
DZ
EA
FN
GC
TT
EB
Material
Specification
317 S.S.
WC6 Alloy Steel
347 S.S.
C5 Alloy Steel
WC9 Alloy Steel
Duplex
22% Duplex
254 SMO Stainless
Inconel® 625
LCC Low Temp. Steel
Titanium
25% Super Duplex
ASTM A351, Gr. CG-8M
ASTM A217, Gr. WC6 (11⁄4% Cr)
ASTM A351, Gr. CF-8C
ASTM A217, Gr. C5 (5% Cr)
ASTM A217, Gr. WC9 (2½% Cr)
ASTM A351, Gr. CD4MCu
ASTM A995, Gr. 4A
UNS S31254, (ASTM CK3MCuN)
ASTM A494, Gr. CW-6MC
ASTM A352, Gr. LCC
ASTM B367, Gr. C2 / ASTM B348, Gr. 2r
ASTM A995, Gr 6A / A351, Gr CD3MWCuN
End Connections
Operating Temperature
°C
°F
-45 to 120
-49 to 248
-30 to 121
-22 to 250
-40 to 121
-40 to 250
-196 to 538 -321 to 1000
-101 to 260 -150 to 500
-12 to 210
-10 to 410
Ordering
Letter
F
G
P
R
W
Connections
Serrated face
Hub End
Plain Face (non serrated)
Ring Joint
Weld-End
Special Body COnfigurations
Designation No.
Configuration
None (Blank)
Wafer Style, inserted between mating flanges with
studs spanning entire length
1
Lug design w/threaded holes bolted from each end
2
Lug design with through-bolt holes to protect studs
3
Double flanged design with valve flanges bolted to
individual line flanges
1 This range of operating temperatures is for general guidance. The range varies with application, body and plate material.
Common modifications
Mod No.
Material Description
Mod. No.
Material Description
-9
-14
-39
-201
-233
-169
-559
-772
-R81
-T60
Inconel X-750 Springs
316 S.S. Plate, Pins
410 S.S. Plate, Pins & Inconel® X-750 Springs
316 S.S. Plate, Pins, Inconel® X-750 Springs
316 S.S. Plate, Pins, Inconel® X-750 Springs and 316 S.S. Overlay Seat
410 S.S. Plate, Pins, Inconel® X-750 Springs and 410 S.S. Overlay Seat
Inconel® X-750 Spring and conformance to NACE
®
Monel Plate, Pins, Springs, Bearings and Monel® Overlay Seat
316SS Plate, Pins, Inconel® Inconel® X-750 Springs, 316SS Overlay Seat, NACE
410SS Plate, Pins, Inconel® Inconel® X-750 Springs, 410SS Overlay Seat, NACE
-169
-491
-131E
-772
-233
-385E
Type 410
Hard Faced
F6 and Hard Faced
Monel®
Type 316
316 and Hard Faced
®
NOTE:
Numerous additional modifications may be specified.
Please consult factory
Standard trim (wetted parts) materials
Typical Figure No.
Body & Plate
Seal
Hinge Pin
Spring
Stop Pin
Retainer
BMF
CMF
CPF-9
CPF-9
SMF
SPF-9
SVF-9
Al. Bronze
A351 GR CF8M
A351 GR CF8M
A351 GR CF8M
A216 GR WCB
A216 GR WCB
A216 GR WCB
Buna-N
Buna-N
316 Stainless
Viton-B®
Buna-N
Carbon Steel
Viton-B®
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
Inconel® X-750
Inconel® X-750
316 S.S.
Inconel® X-750
Inconel® X-750
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
316 S.S.
Hastelloy® C is a registered trademark of Haynes International
18
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Noz-Chek® High Performance
Nozzle-Type Non-Slam Check Valves
19
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Noz-Chek® Valves
Design Features and Benefits
Scope of Line
• Sizes 2"– 60"
• ASME B16.34, pressure classes 150 – 4500
• Flanged, butt-weld ends, hubs ends and specials
• Standard and short pattern
• Wide range of materials of construction available.
Consult factory for special application requirements
High Performance Non-Slam Check Valve
One of the most significant elements of piping system design
is integrating the means to protect mechanical equipment and
prevent damage caused by backflow. Backflow prevention is
routinely achieved through the use of swing check and other
style check valves.
Noz-Chek® valves are specifically designed for fast-reversing
systems where backflow is a constant concern. In such critical
service applications, Noz-Chek® Non-Slam Check Valves offer
the following benefits.
• Minimization of the damaging effects of water hammer in
fluid systems
• Removal of chatter associated with conventional valves in
reciprocating compressor service
• Protection of rotating equipment from damage due to flow
reversal
• Minimization of pressure loss in piping systems
• Quick, dynamic response, reducing reverse velocity
Noz-Chek® is designed and manufactured to the highest
quality standards.
INDUSTRY STANDARDS
API 598
Valve Pressure Testing and Inspection
ASME B16.34
Pressure/Temperature Ratings
ASME B16.5 and B16.47
Flanges
ASME Section III
Rules for Construction of Nuclear Facility Components
20
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Noz-Chek® Valves
Design Features and Benefits
Opening
Features
Reduced pressure, generated by increased velocity in the
minimal flow area, creates additional force assisting the disc
to open and allowing for extra spring loading that facilitates
a faster closing time.
Extensive research and development combined with proven
design principles, culminated in these unique Noz-Chek®
features:
• Few moving parts — Disc is the only moving part,
minimizing wear.
This spring force is
balanced in the fully
open position.
• Axial movement of disc — Disc and seating configuration
create a streamlined flow path with a venturi effect,
resulting in low pressure drop.
The Noz-Chek® is designed
to mainatin the disc in a
stable open position even
during moderate flow
oscillation.
• Short stroke of spring-assisted disc — Inlet flow velocity
moves disc axially with a short stroke. In response to flow
velocity reduction, a compressed spring initiates valve
closure providing quick response.
• Spring options — Choice of spring affects critical velocity
and valve response. Selection is based on an engineering
evaluation of specific applications. In absence of such
evaluation, a standard spring will be provided.
Characteristics
Closing
When a noticeable reduction in flow occurs, the disc reacts
immediately, limiting backflow and valve slamming.
The spring load, low mass disc, and short displacement
ensure a rapid self-dampening response.
For unique applications,
the internal geometry can
be modified to suit the
service conditions.
Noz-Chek® valves deliver an effective dynamic response
under various flow deceleration conditions. The dynamic
performance characteristics of Noz-Chek® valves are
compared to swing check and dual plate spring-assisted
check valves in Figure 1.
Noz-Chek®’s unique design features result in superior
performance, fast response and lower pressure loss in piping
systems.
V r Reverse Velocity (m/s)
Swing-Check
Standard
Dual Disc
Check Valve
DUO-CHEK
NOZ-CHEK
®
®
d v/d t Deceleration (m/s2)
Figure 1
www.cranenuclear.com
21
Noz-Chek® Valves
Design Features and Benefits
Applications
• Feedwater
• Cooling water
• Blowdown
• Steam
Flow Outlet Zone
Designed for pressure recovery to
minimize pressure loss and fluid
turbulence. Results in smooth flow.
Spring
Being an indispensable component, it is designed
and specified for the particular service conditions
required by the customer’s application
22
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Noz-Chek® Valves
Disc
Standard disc is high strength with
minimized weight to provide fast dynamic
response. Design minimizes bearing loads,
lengthening the life of bearings and shaft.
Offered in a variety of trim materials, with
metal or resilient seating.
Seat
Assures venturi flow by
its configuration. Provides
seating surface for disc
and enables bubble-tight
seal with resilient materials.
Flow Inlet Zone
Venturi design maximizes flow impact on disc.
Provides streamlined flow when valve is fully
open to minimize pressure loss.
23
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Noz-Chek® Valves
Components and Materials of Construction
9
5
7
10
6
UPPER HALF SHOWN - OPEN
LOWER HALF SHOWN - CLOSED
FLOW
8
11
4
8
2
3
1
Item No.
Part Name
CS Valves
SS Valves
1
Body
A216 GR WCB
A351 GR CF8M
2
Disc
A351 GR CF8M
A351 GR CF8M
3
Seat2
A479 TP 316
A479 TP 316
4
Disc Stem
A479 TP 316
A479 TP 316
5
Disc A/R PIN*
316 Stainless
316 Stainless
6
Spring
Inconel® X-750
Inconel® X-750
7
Guide Housing
A479 TP 316
A479 TP 316
8
Guide Bushing
Nitronic 60
Nitronic 60
2
9
Seat O-Ring
Viton W/FEP Jacket
Viton W/FEP Jacket
10
Grub Screw
Stainless Steel
Stainless Steel
11
Retaining Ring
A479 TP 316
A479 TP 316
3
NOTES:
1) Above table represents typical materials of construction. Actual valve can be made-to-order, as per customer specifications.
2) Disc and/or seat can be provided hardfaced. Resilient seats also available.
3) Other materials, including silver plated Inconel, are available.
* A/R = Anti-rotational
24
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Noz-Chek® Valves
Flanged End Non-Slam Dimensional Tables
Style
NCS
B
A
Style NC
Class
150 RF
Standard
Nominal Pattern
Size
A
in (mm)
8.00
2
(203)
9.50
3
(241)
11.50
4
(292)
14.00
6
(356)
19.50
8
(495)
24.50
10
(622)
27.50
12
(699)
31.00
14
(787)
34.00
16
(864)
38.50
18
(978)
38.50
20
(978)
51.00
24
(1,295)
57.00
28
(1,448)
60.00
30
(1,524)
77.00
36
(1,956)
42
48
54
60
-
Class
Short
Pattern
B
in (mm)
14.37
(365)
17.25
(438)
18.70
(475)
21.45
(545)
24.00
(610)
33.47
(850)
31.88
(810)
37.22
(945)
39.77
(1,010)
39.37
(1,000)
55.72
(1,415)
57.50
(1,461)
72.84
(1,850)
80.12
(2,035)
Weight
A
lbs. (kg)
22
(10)
66
(30)
106
(48)
168
(76)
428
(194)
536
(243)
628
(285)
944
(428)
1,078
(489)
1,795
(814)
3,177
(1441)
2,540
(1,152)
4,422
(2,006)
5,417
(2,457)
5,983
(2,714)
-
B
lbs. (kg)
485
(220)
622
(282)
765
(347)
915
(415)
1,186
(538)
2,370
(1,075)
2,888
(1,310)
3,439
(1,560)
4,332
(1,965)
5,743
(2,605)
9,039
(4,100)
11,629
(5,275)
20,834
(9,450)
23,810
(10,800)
300 RF
Standard Short
Nominal Pattern Pattern
Size
A
B
in (mm) in (mm)
10.50
2
(267)
12.50
3
(318)
14.00
4
(356)
17.50
10.00
6
(445)
(254)
21.00
12.25
8
(533)
(311)
24.50
14.37
10
(622)
(365)
28.00
17.25
12
(711)
(438)
33.00
18.70
14
(838)
(475)
34.00
21.45
16
(864)
(545)
38.50
24.00
18
(978)
(610)
40.00
31.88
20
(1,016)
(810)
53.00
31.88
24
(1,346)
(810)
59.00
40.75
28
(1,499)
(1,035)
60.00
39.77
30
(1,524)
(1,010)
82.00
39.37
36
(2,083)
(1,000)
55.72
42
(1,415)
57.50
48
(1,461)
72.84
54
(1,850)
80.12
60
(2,035)
Class
Weight
A
lbs. (kg)
29
(13)
66
(30)
106
(48)
209
(95)
450
(204)
613
(278)
730
(331)
1,186
(538)
1,426
(647)
1,808
(820)
2,586
(1,173)
3,338
(1,514)
5,262
(2,387)
5,831
(2,645)
9,608
(4,358)
-
B
lbs. (kg)
194
(88)
419
(190)
547
(248)
672
(305)
981
(445)
1,168
(530)
1,521
(690)
2,403
(1,090)
3,020
(1,370)
4,850
(2,200)
5,278
(2,394)
8,091
(3,670)
12,390
(5,620)
11,740
(5,325)
22,355
(10,140)
24,471
(11,100)
600 RF
Nominal
Size
2
3
4
6
8
10
12
14
16
18
20
24
28
30
36
42
48
54
60
Standard
Pattern
Short
Pattern
A
in (mm)
11.50
(292)
14.00
(356)
17.00
(432)
22.00
(559)
26.00
(660)
31.00
(787)
33.00
(838)
35.00
(889)
39.00
(991)
43.00
(1,092)
47.00
(1,194)
55.00
(1,397)
63.00
(1,600)
65.00
(1,651)
82.00
(2,083)
-
B
in (mm)
15.37
(390)
12.25
(311)
14.38
(365)
17.25
(438)
18.69
(475)
21.50
(546)
31.88
(810)
31.88
(810)
31.88
(810)
34.25
(870)
39.75
(1,010)
47.82
(1,215)
57.50
(1,461)
63.58
(1,615)
72.00
(1,829)
85.00
(2,159)
Weight
A
lbs. (kg)
37
(17)
66
(30)
163
(74)
425
(193)
551
(250)
880
(399)
1,138
(516)
1,437
(652)
2,110
(957)
3,411
(1,547)
3,389
(1,537)
5,315
(2,411)
8,673
(3,934)
8,675
(3,935)
19,354
(8,779)
-
B
lbs. (kg)
373
(169)
448
(203)
739
(335)
939
(426)
1,186
(538)
1,742
(790)
2,987
(1,355)
3,042
(1,380)
4,266
(1,935)
5,864
(2,660)
6,614
(3,000)
9,921
(4,500)
14,515
(6,584)
22,597
(10,250)
27,337
(12,400)
40,786
(18,500)
25
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Noz-Chek® Valves
Flanged End Non-Slam Dimensional Tables
Style
NCS
B
Class
900 RF
Nominal
Size
2
3
4
6
8
10
12
14
16
18
20
24
28
30
36
42
48
Standard
Pattern
Short
Pattern
A
in (mm)
14.50
(368)
15.00
(381)
18.00
(457)
24.00
(610)
29.00
(737)
33.00
(838)
38.00
(965)
40.50
(1,029)
44.50
(1,130)
48.00
(1,219)
52.00
(1,321)
61.00
(1,549)
-
B
in (mm)
15.38
(391)
13.63
(346)
15.50
(394)
18.00
(457)
18.62
(473)
29.51
(750)
30.50
(775)
34.22
(869)
40.00
(1,016)
40.00
(1,016)
40.41
(1,026)
46.84
(1,190)
60.00
(1,524)
64.00
(1,626)
Weight
A
lbs. (kg)
79
(36)
121
(55)
220
(100)
567
(257)
739
(335)
1,508
(684)
1,951
(885)
2,928
(1,328)
3,225
(1,463)
4,456
(2,021)
6,484
(2,941)
8,126
(3,686)
-
B
lbs. (kg)
425
(193)
639
(290)
1,065
(483)
1,488
(675)
1,532
(695)
2,690
(1,220)
3,175
(1,440)
4,674
(2,120)
7,015
(3,182)
10,251
(4,650)
10,472
(4,750)
15,984
(7,250)
21,870
(9,920)
31,747
(14,400)
A
Style
Class
1500 RF
Standard
Nominal Pattern
Size
A
in (mm)
14.50
2
(368)
18.50
3
(470)
21.50
4
(546)
27.75
6
(705)
32.75
8
(832)
39.00
10
(991)
44.50
12
(1,130)
49.50
14
(1,257)
54.50
16
(1,384)
60.50
18
(1,537)
65.50
20
(1,664)
76.50
24
(1,943)
NC
Class
Short
Pattern
B
in (mm)
15.88
(403)
13.63
(346)
15.50
(394)
18.00
(457)
25.53
(648)
29.53
(750)
32.00
(813)
34.22
(869)
34.22
(869)
Weight
A
lbs. (kg)
79
(36)
172
(78)
271
(123)
805
(365)
1,008
(457)
1,978
(897)
2,650
(1,202)
4,932
(2,237)
5,485
(2,488)
8,106
(3,677)
9,207
(4,176)
13,329
(6,046)
B
lbs. (kg)
595
(270)
805
(365)
1,385
(628)
1,984
(900)
3,527
(1,600)
4,057
(1,840)
5,952
(2,700)
6,504
(2,950)
11,442
(5,190)
2500 RF
Nominal
Size
2
3
4
6
8
10
12
Standard
Pattern
Short
Pattern
A
in (mm)
B
in (mm)
A
lbs. (kg)
B
lbs. (kg)
17.75
(451)
22.75
(578)
26.50
(673)
36.00
(914)
40.25
(1,022)
50.00
(1,270)
56.00
(1,422)
15.88
(403)
17.69
(449)
22.13
(562)
36.00
(914)
115
(52)
262
(119)
370
(168)
1,307
(593)
1,925
(873)
3,638
(1,650)
5,604
(2,542)
1,069
(485)
1,543
(700)
2,705
(1,227)
4,570
(2,073)
Weight
26
www.cranenuclear.com
Noz-Chek® Valves
Technical data • Table of standard Cv for Noz-Chek valves
NPS
1.5
2
2.5
3
4
5
6
8
10
12
14
16
18
20
22
24
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
60
150
Cv
140
140
140
300
540
840
1210
2170
3410
4940
6070
8090
10440
13100
16090
19420
27120
31520
35710
40830
46340
52270
58620
65410
71790
79470
87160
95790
104930
114050
124270
145230
300
Cv
140
140
140
310
540
840
1220
2180
3430
4980
6110
8160
10210
12860
15830
19150
26830
31220
35980
41140
46690
51960
57950
64310
71510
78290
86400
95010
103110
112740
122920
143840
600
Cv
80
140
140
310
550
850
1230
2130
3290
4810
5810
7690
9690
11950
14460
17650
24110
28020
33950
37170
41830
46810
52130
57790
63820
70660
77470
85130
92770
100860
109960
129070
900
Cv
80
120
120
280
510
800
1140
1950
3060
4340
5300
6980
8900
11070
13510
16210
22430
25970
33080
34520
38720
43830
48650
54490
59970
66160
72780
1500
Cv
80
120
120
260
450
710
1000
1710
2690
3800
4600
6060
7730
9760
11900
14250
2500
Cv
70
80
80
180
290
450
670
1160
1860
2650
27
www.cranenuclear.com
Noz-Chek® Valves
Ordering Number System
24"
NC
30
Valve Size
Style
S
M
F
Pressure
Body & Trim
Seal
Class
End
Connection
Modification
Number
Description: 24" Style NC, ASME Class 300, Carbon Steel Body, Buna-N Seal, Raised Face Flanges (No Modifications)
Valve Size Nominal valve sizes are expressed in inches
Style
Ordering Letter
Body Style
Size Range
NC
Integral Body,
Standard Pattern
2" - 60"
(50 mm - 1500 mm)
NCS
Integral Body,
Short Body Pattern
8" - 60"
(400­mm - 1500 mm)
Seal
Operating temperature for general guidance only
Code Letter
Operating Temp.
Seal Material
°C
°F
M
Buna-N
-57 to 120
-70 to 250
V
Viton-B®
-40 to 204
-40 to 400
P
Metal
-257 to 537
-450 to 1000
Z
EPDM*
-57 to 120
-70 to 250
Viton® is a registered trademark of DuPont Performance Elastomers L.L.C. Metal seats may be furnished as integral, or special overlay materials are available.
Flange Series
ASME
Ordering No.
Pressure Class
15
150
30
300
60
600
90
900
150
1500
250
2500
450
4500
28
www.cranenuclear.com
Noz-Chek® Valves
Ordering Number System (cont.)
24"
NC
30
Valve Size
Style
S
M
F
Pressure
Body & Trim
Seal
Class
End
Connection
Modification
Number
Description: 24" Style NC, ASME Class 300, Carbon Steel Body, Buna-N Seal, Raised Face Flanges (No Modifications)
Standard Body & Disc Materials
Code
Body
Disc
S
ASTM A 216 GR WCB carbon steel
alloy steel
C
ASTM A 351 GR CF8M 316 stainless steel
stainless steel
E
ASTM A 217 GR CA15 410 stainless steel
11-13 chrome
GC
ASTM A 352 GR LCC low temp. carbon steel
alloy steel
DZ
ASTM A890 GR 4A duplex stainless steel
Duplex SS
Spring Material
Maximum Recommended Operating Temperatures
Material
°C
°F
316 Stainless Steel
120
250
Inconel 600®
315
600
Inconel X-750®
537
1000
Inconel® is a registered trademark of Special Metals Corporation. For temperatures up to 600°F (315°C), Inconel will be furnished as standard.
For service temperatures above 600ºF (315ºC)., Inconel X-750 springs will be specified. Other alloy spring materials are available to meet specific requirements.
End Connections
Ordering Letter
Connections
F
Flanged-Raised Faced
X
Flanged-Flat Faced
G
Grayloc® End
P
Flanged Smooth Finish
R
Flanged Ring Joint
W
Butt Weld
Grayloc® is a registered trademark of Oceaneering International, Inc.
Modifications
A modification number is assigned when
non-standard features, material mixes or
documentation are ordered.
www.cranenuclear.com
29
Notes
30
www.cranenuclear.com
Notes
31
www.cranenuclear.com
For Parts:
For Services:
Crane Nuclear
Crane Nuclear
860 Remington Bldv.
2825 Cobb International Blvd.
Bolingbrook, IL 60440 USA
Kennesaw, GA 30152 USA
Tel: 630.226.4900
Tel: 770.424.6343
Fax: 630.226.4648
Fax: 770.429.4752
www.flowoffluids.com
Crane Co., and its subsidiaries cannot accept responsibility for possible errors in catalogues, brochures, other printed
materials, and website information. Crane Co. reserves the right to alter its products without notice, including products
already on order provided that such alteration can be made without changes being necessary in specifications already
agreed. All trademarks in this material are property of the Crane Co. or its subsidiaries.
© 2013 CRANE Nuclear, www.cranenuclear.com
NU-SEC6-BU-EN-A4-CN-2013_08
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