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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

 

34 inch, 36 inch, 38 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

Llateral Movement/Spring Rates

Axial

54
in.
Overall Length
66
in.
Overall Length
78
in.
Overall Length

Movement

Spring Rate
1372
mm
Overall Length
1676
mm
Overall Length
1981
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

34

50

4.44

273

6.97

129

9.56

74

7.96

292

3.5

113

4.9

177

2.31

243

1.32

202

5

135

2.13

1683

3.54

723

5.01

398

4.5

1346

9.5

54

30.1

90

12.94

127

7.12

114

24

275

1.58

4951

2.89

1856

4.25

958

4.24

2699

19.3

40

88.6

73

33.21

108

17.14

108

48

36

50

4.21

323

6.59

152

9.05

88

7.96

309

3.5

107

5.8

167

2.72

230

1.57

202

6

135

2.02

1991

3.35

854

4.74

471

4.49

1427

9.5

51

35.6

85

15.28

120

8.43

114

26

250

1.52

5853

2.78

2194

4.09

1132

4.31

2860

17.6

39

104.7

71

39.26

104

20.26

109

51

38

50

3.99

379.0

6.26

179

8.59

103

7.96

327

3.5

101

6.8

159

3.20

218

1.84

202

6

130

1.93

2333.0

3.21

1001

4.53

552

4.52

1508

9.1

49

41.8

82

17.91

115

9.88

115

27

250

1.44

6859

2.64

2571

3.88

1327

4.3

3021

17.6

37

122.7

67

46.01

99

23.75

109

54

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 130-135 PSIG Series and 250-275 PSIG Series: Customer to specify actual flanges required.
Plate flanges and angle flanges available for low pressure systems.
Pipe: ASTM A-285-C.
50 PSIG Series: 0.375-inch wall
130-135 PSIG Series: 0.375-inch wall.
250-275 PSIG Series: 0.500-inch wall.
Liners: A240-T304.
Covers: Carbon steel.
Tie Rods, Hinges, Gimbals: Carbon steel

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