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U.S. Bellows U.S. BELLOWS, INC.
METALLIC EXPANSION JOINT CATALOG
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Expansion Joint Data Tables
 
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Double Externally Pressurized (X-Flex) Expansion Joint

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  Single Metallic Expansion Joint Technical Drawing  

Externally Pressurized Expansion Joint

 

300# Design

12 inch Through 24 inch Nominal Diameter

Notes:

  1. Rated life cycle at 650°F is 1000 cycles for full rated movement shown above.
  2. To increase cycle life or movements, please refer to graph on cycle life.
  3. Expansion joint is capable of taking 10% of rated movement as extension, with remaining 90% as axial compression.
  4. Maximum test pressure: 1.5 X rated working pressure.
  5. Bellows rated for 650°F: See catalog flange data for appropriate flange temperature/pressure ratings.
  6. Maximum installation misalignment is ±1/4-inch axial and ±1/16-inch lateral.

Size

Axial

Movement

Spring

Rate

Overall Length

Weight

Effective Area

Shell Outside Diameter

Anchor Foot Height

Anchor Foot Type

Flanged

Ends

Weld

Ends

in.

lb./in.

in.

lb.

lb.

in.2

in.

in.

mm

kg/mm

mm

kg

kg

kg/cm2

mm

mm

12

4

1854

49

843

613

181.96

18.000

13.000

C

102

33.2

1245

383

279

82.71

457

330

16

927

87

1243

1013

181.96

18.000

13.000

406

16.6

2210

565

460

82.71

457

330

14

8

2028

49

1000

670

213.07

20.000

14.000

C

203

36.3

1245

455

305

96.85

508

356

16

1014

87

1446

1116

213.07

20.000

14.000

406

18.1

2210

657

507

96.85

508

356

16

8

1770

47

1217

837

271.60

24.000

16.000

D

203

31.7

1194

553

381

123.45

610

406

16

885

83

1710

1330

271.60

24.000

16.000

406

15.8

2108

777

605

123.45

610

406

18

8

1986

47

1335

835

333.16

24.000

16.000

D

203

35.5

1194

607

380

151.44

610

406

16

993

83

1861

1361

333.16

24.000

16.000

406

17.8

2108

846

619

151.44

610

406

20

8

2200

49

1841

1211

401.01

30.00

19.000

D

203

39.4

1245

837

550

182.28

762

483

16

1100

85

2458

1828

401.01

30.00

19.000

406

19.7

2159

1117

831

182.28

762

483

24

8

2630

50

2095

1145

555.55

30.00

19.000

D

203

47.1

1270

952

520

252.52

762

483

16

1315

86

2778

1828

555.55

30.00

19.000

406

23.5

2184

1263

831

252.52

762

483

Materials
Bellows: A240-T304. Alternate materials available upon request. Refer to the materials section.
Flanges: ASTM A105.
300 lb ANSI B16.5 RFSO.
Pipe: ASTM A53/A106.
Shell: ASTM A53/A106; API-5L.
Rings: ASTM A285-C.

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