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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

 

18 inch Nominal Diameter

Effective (Thrust) Area: 293.95 in2 (1896 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

18

75

12

134

18

67

15

101

3.49

0.57

10

476

2938

386

0.7533

5.3

305

60.9

457

30.5

381

45.9

88.6

14.5

11

9

53

39.3

0.7

50

18

144

24

77

21

110

5.93

1.59

10

297

690

241

0.4688

3.5

457

65.5

610

35

533

50

151

40.4

11

5

12

24.5

0.4768

25

24

153

30

86

27

119

8.81

3.27

10

216

261

175

0.3403

1.8

610

69.5

762

39.1

686

54.1

224

83.1

11

4

5

17.8

0.3461

18

200

12

279

15

70

14

174

1.42

0.16

9

2787

35476

2265

1.7567

14.1

305

127

381

31.8

356

79.1

36.1

4.06

10

50

635

2304

1.7866

200

18

293

21

84

20

189

2.72

0.59

10

1501

5260

1219

0.9406

14.1

457

133

533

38.2

508

85.9

69.1

15

11

27

94

124.0

0.9566

175

24

308

27

99

26

203

4.07

1.31

10

1027

1654

834

0.6422

12.3

610

140

686

45

660

92.3

103

33.3

11

18

30

84.8

0.6531

18

400

12

527

13

78

13

302

0.99

0.09

6

7834

176001

6400

2.5583

28.1

305

240

330

35.5

330

137

25.1

2.29

7

140

3150

650.9

2.6018

400

18

555

19

106

19

331

2.18

0.41

10

3563

16529

2909

1.1629

28.1

457

252

483

48.2

483

150

55.4

10.4

11

64

296

295.8

1.1827

400

24

584

25

135

25

359

3.37

0.99

10

2305

4478

1882

0.7525

28.1

610

265

635

61.4

635

163

85.6

25.1

11

41

80

191.4

0.7652

Materials
Bellows: A240-T304. Alternate materials available upon request. Refer to the materials section.
Flanges: ASTM A105.
25-75 PSIG Series: 125 lb. ANSI B16.5 RFSO.
175-200 PSIG Series: 150 lb. ANSI B16.5 RFSO
400 PSIG Series: 300 lb. ANSI B16.5 RFSO
Plate flanges and angle flanges available for low pressure systems.
Pipe: ASTM A53/A106.
25-75 PSIG Series: Std. Wt. Pipe.
175-200 PSIG Series: Std. Wt. Pipe
400 PSIG Series: Std. Wt. Pipe.
Liners: A240-T304.
Covers: Carbon steel.
Tie Rods, Hinges, Gimbals: Carbon steel

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