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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

 

50 inch Through 72 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

50
in.
Overall Length
66
in.
Overall Length
78
in.
Overall Length

Movement

Spring Rate
1270
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

50

75

1.74

3751

2.90

1610

4.10

887

5.4

1393

5.3

44

67.1

74

28.81

104

15.87

137

25

52

70

1.69

4209

2.81

1807

3.97

995

5.44

1450

4.9

43

75.3

71

32.34

101

17.81

138

26

54

70

1.46

5641

2.53

2274

3.64

1214

5.44

1506

4.9

37

100.9

64

40.69

92

21.73

138

27

60

60

1.26

8122

2.21

3205

3.20

1696

5.31

1677

4.2

32

145.3

56

57.36

81

30.35

135

30

66

55

1.16

10757

2.03

4245

2.93

2246

5.34

1847

3.9

29

192.5

52

75.97

74

40.19

136

33

72

50

1.01

15372

1.82

5845

2.66

3041

5.4

2017

3.5

26

275.1

46

104.65

68

54.42

137

36

Materials
Bellows: A240-T304. Alternate materials available upon request. Refer to the materials section.
Flanges: ASTM A105.
50-75 PSIG Series: 125 lb. Lt/Wt FFSO
Plate flanges and angle flanges available for low pressure systems.
Pipe: ASTM A-285-C.
50-75 PSIG Series: 0.375-inch wall.
Liners: A240-T304.
Covers: Carbon steel.
Tie Rods, Hinges, Gimbals: Carbon steel

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Contact Us: +1 (281) 241-9418 Toll Free: (855) 591-0906 Fax: +1 (713) 731-8640 sales@usbellows.com
Our Parent Company: Piping Technology Pipe Supports, Pipe Clamps, Pipe Hardware & Insulated Pipe Shoes
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