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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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Universal Expansion Joint

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Flanged Universal Joint  

Flanged Universal Expansion Joint

 

28 inch, 30 inch, 32 inch Nominal Diameter

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. Tabulated values are for tied joints, with butt weld ends. Performance of joints with flanged ends, and unrestrained joints, will exceed tabulated values.
  6. Maximum test pressure: 1.5 X rated working pressure.
  7. Bellows rated for 650°F: See catalog flange data for appropriate flange temperature/pressure ratings.
  8. Pressure thrust load applied to adjacent pipe anchors/equipment when unrestrained expansion joints are used.

Size

Pressure

Non-concurrant Movements/Spring Rates

Lateral Movement/Spring Rates

Axial

48
in.
Overall Length
60
in.
Overall Length
72
in.
Overall Length

Movement

Spring Rate
1219
mm
Overall Length
1524
mm
Overall Length
1829
mm
Overall Length

Movement

Spring
Rate

Movement

Spring
Rate

Movement

Spring
Rate

PSIG

in.

lb./in.

in.

lb./in.

in.

lb./in.

in.

lb./in.

kg/cm2

mm

kg/mm

mm

kg/mm

mm

kg/mm

mm

kg/mm

28

50

3.61

333

6.36

132

9.22

70

7.36

311

3.5

92

6.0

162

2.36

234

1.25

187

6

160

1.74

1801

3.17

675

4.67

348

3.85

1437

11.2

44

32.2

81

12.08

119

6.23

98

26

315

1.45

4512

2.82

1554

4.25

772

3.71

2881

22.1

37

80.7

72

27.81

108

13.82

94

52

30

50

3.65

316

6.41

126

9.30

67

7.96

257

3.5

93

5.7

163

2.25

236

1.20

202

5

135

1.91

1708

3.48

640

5.13

330

4.53

1185

9.5

49

30.6

88

11.45

130

5.91

115

21

290

1.55

4276

3.00

1473

4.52

731

4.23

2376

20.4

39

76.5

76

26.36

115

13.08

107

43

32

50

3.43

382

6.03

152

8.75

80

7.96

274

3.5

87

6.8

153

2.72

222

1.43

202

5

135

1.79

2062

3.27

773

4.82

399

4.53

1266

9.5

45

36.5

83

13.83

122

7.14

115

23

290

1.45

5163

2.81

1778

4.25

883

4.23

2537

20.4

37

92.4

71

31.82

108

15.80

107

45

Materials
Bellows: A240-T304. Alternate materials available upon request. Refer to the materials section.
Flanges: ASTM A105.
50 PSIG Series: 125 lb Lt/Wt FFSO.
For 135-160 PSIG Series and 290-315 PSIG Series: Customer to specify actual flanges required.
Plate flanges and angle flanges available for low pressure systems.
Pipe: ASTM A-53/APJ-5L/A-285-C.
50 PSIG Series: 0.375-inch wall.
135-160 PSIG Series: 0.375-inch wall.
290-315 PSIG Series: 0.500-inch wall.
Liners: A240-T304.
Covers: Carbon steel.
Tie Rods, Hinges, Gimbals: Carbon steel

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