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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

 

3 inch Nominal Diameter

Effective (Thrust) Area: 12.76 in2 (82.32 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.

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

3

170

6

7

12

6

9

7

0.92

0.28

10

304

560

11

0.0087

11.9

152

3.18

305

2.73

229

3.18

23.4

7.11

11

5

10

1.1

0.0088

90

9

7

15

7

12

7

1.87

1.03

10

169

93

6

0.0048

6.3

229

3.18

381

3.18

305

3.18

47.5

26.2

11

3

2

0.6

0.0049

40

12

8

18

7

15

8

2.84

2.27

10

117

31

4

0.0033

2.8

305

3.64

457

3.18

381

3.64

72.1

57.7

11

2

1

0.4

0.0034

3

500

6

27

12

6

9

17

0.36

0.08

10

2020

7142

72

0.0214

35.1

152

12.3

305

2.73

229

7.73

9.14

2.03

11

36

128

7.3

0.0217

500

9

28

15

7

12

18

0.77

0.36

10

943

726

33

0.0100

35.1

229

12.7

381

3.18

305

8.18

19.6

9.14

11

17

13

3.4

0.0101

250

12

29

18

8

15

19

1.3

0.93

10

615

201

22

0.0065

17.6

305

13.2

457

3.64

381

8.64

33

23.6

11

11

4

2.2

0.0066

Materials
Bellows: A240-T304. Alternate materials available upon request. Refer to the materials section.
Flanges: ASTM A105.
40-170 PSIG Series: 150 lb. ANSI B16.5 RFSO.
250-500 PSIG Series: 300 lb. ANSI B16.5 RFSO
Plate flanges and angle flanges available for low pressure systems.
Pipe: ASTM A53/A106.
40-70 PSIG Series: Std. Wt. Pipe.
250-500 PSIG Series: Std. Wt. Pipe
Liners: A240-T304.
Covers: Carbon steel.
Tie Rods, Hinges, Gimbals: Carbon steel

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