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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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Single Expansion Joint

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Single Metallic Expansion Joint Technical Drawing   Single Metallic Expansion Joint Technical Drawing  

Single Weld End

Single Flanged End

 
    Single Metallic Expansion Joint technical drawing  
   

Single Flanged Weld End

 

38 inch Nominal Diameter

Effective (Thrust) Area: 1231.38 in2 (7942.40 cm2)

Notes:

  1. Rated life cycle at 650°F is 3000 cycles for any one tabulated movement.
  2. To combine axial, lateral and angular movements, please refer to the how to order section.
  3. To increase cycle life or movements, please refer to graph on cycle life.
  4. Rated bellows extension is equal to rated axial movement. Provided bellows is precompressed the amount of design extension. Installed overall length will decrease by the amount of precompression.
  5. Maximum test pressure: 1.5 X rated working pressure.
  6. Bellows rated for 650°F: See catalog flange data for appropriate flange temperature/pressure ratings.
  7. Torsional spring rate data provided only for modeling expansion joints on computer stress programs. Please consult factory for allowable torsional loadings.
  8. Overall lengths and weights for unrestrained expansion joints only. Consult factory for information regarding tied, hinged, or gimbal expansion joints.
  9. Pressure thrust load applied to adjacent pipe anchors/equipment when unrestrained expansion joints are used.

Diameter

Pressure

Overall Length and Weight

Non-concurrant

movements

Spring rates

Flanged

Ends

Weld

Ends

Combination

Ends

Axial

Lateral

Angular

Axial

Lateral

Angular

Torsional

Overall Length

Weight

Overall Length

Weight

Overall Length

Weight

Compression

PSIG

in.

lb.

in.

lb.

in.

lb.

in.

in.

deg.

lb./in.

lb./in.

in./lb./deg.

in./lb./deg.

x 106

kg/cm2

mm

kg

mm

kg

mm

kg

mm

mm

Grad

kg/mm

kg/mm

N-M/Grad

N-M/Grad

x 105

38

45

12

566

16

145

14

355

3.98

0.29

10

654

21214

2229

6.7546

3.2

305

257

406

65.9

356

161

101

7.37

11

12

380

226.7

6.8694

45

18

589

22

168

20

378

6.8

0.83

10

392

4374

1338

4.0351

3.2

457

268

559

76.4

508

172

173

21.1

11

7

78

136.1

4.1037

45

24

611

28

190

26

401

9.62

1.66

10

280

1563

955

2.8769

3.2

610

278

711

86.4

660

182

244

42.2

11

5

28

97.1

2.9258

38

130

Customer to specify flange configuration. Weights and O.A.L. will be furnished upon receipt of this information.

16

160

Customer to specify flange configuration. Weights and O.A.L. will be furnished upon receipt of this information.

2.26

0.15

7

3015

110538

10289

12.1982

9.1

406

72.7

57.4

3.81

7

54

1978

1046.4

12.4056

130

22

196

3.96

0.47

10

1723

20625

5880

6.9704

9.1

559

89.1

101

11.9

11

31

369

598.0

7.0889

130

28

232

5.65

0.95

10

1206

7074

4116

4.8793

9.1

711

105

144

24.1

11

22

127

418.6

4.9622

38

250

16

245

2.15

0.14

6

6043

222048

20669

12.6752

17.6

406

111

54.6

3.56

7

108

3974

2102.0

12.8906

250

22

315

3.77

0.44

10

3453

41432

11811

7.2429

17.6

559

143

95.8

11.2

11

62

741

1201.2

7.3661

250

28

384

5.38

0.91

10

2417

14211

8268

5.0701

17.6

711

175

137

23.1

11

43

254

840.9

5.1563

Materials
Bellows: A240-T304. Alternate materials available upon request. Refer to the materials section.
Flanges: ASTM A105.
45 PSIG Series: 125 lb. Lt. Wt. FFSO
For 130 psig and 250 psig Series: Customer to specify actual flanges required.
Plate flanges and angle flanges available for low pressure systems.
Pipe: ASTM A285-C
45 PSIG Series: 0.375-inch wall.
130 PSIG Series: 0.375-inch wall.
250 PSIG Series: 0.500-inch wall.
Liners: A240-T304.
Covers: Carbon steel.
Tie Rods, Hinges, Gimbals: Carbon steel

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