Metal Bellows Expansion Joints

INTERFLEX TBS-1

INTERFLEX TBS-1 expansion joints are manufactured with multiple layers of heavier gauge T-321 s/s material to achieve higher pressure ratings. The allowable movements shown are based on a minimum of 3,000 non-concurrent cycles.

For lower pressure applications an INTERFLEX TBS-2 expansion joint will provide increased movement capability. When a standard expansion joint is not the right fit we will design and build a custom metal bellows expansion joint at a standard price.

FEATURES

  • Multi-ply T-321 S/S Bellows
  • T-304 S/S/ Flow Liner (Optional)
  • Design per EJMA 10th Edition
  • Welding per ASME Section IX

ENDS

  • 150# A-36 C/S Plate Flanges (FF)
  • 150# A-105 C/S Forged Flanges (RF)
  • Std. Wall A-53 C/S Weld Ends

MATERIALS

  • T-316
  • T-304
  • C-276
  • Inconel 625
  • Other Alloys Available

NOTES

  • Custom lengths and pressure available on request
  • Movements are non-concurrent-minimum 3000 cycles
  • Stainless flanges available on request
  • Tie rods available on request
  • Flow liners may be required.  See EJMA 10 guidelines

Design Data

BELLOWS DESIGN DATA PLATE FLANGES A-36 C/S FORGED FLANGES A-105 STEEL BEVELED WELD ENDS A-53 STD.
SIZE BELLOWS LIVE LENGTH (IN) EFFECTIVE AREA (SQ-IN) AXIAL COMPRESSION * (IN) AXIAL SPRING RATE (LB/IN) LATERAL OFFSET * (IN) LATERAL SPRING RATE (LB/IN) OVERALL LENGTH (IN) WORKING PSIG @ 70ºF OVERALL LENGTH (IN) WORKING PSIG @ 70ºF OVERALL LENGTH (IN) WORKING PSIG @ 600ºF
2” 3.00 5.78 0.50 1135 0.19 1397 4.75 175 5.25 285 11.00 300
2-1/2” 3.00 9.51 0.75 624 0.19 1251 4.75 175 5.50 285 11.00 275
3” 3.00 12.47 0.50 2520 0.13 6683 4.75 175 5.63 285 11.00 350
3-1/2” 3.00 16.69 x x x x x x 5.75 285 11.00 350
4” 4.50 20.51 1.00 1422 0.25 2751 6.25 175 7.38 285 12.50 300
5” 4.50 30.63 0.88 2906 0.19 8396 6.25 175 7.63 275 12.50 275
6” 4.50 41.83 1.00 2665 0.19 10729 6.25 175 7.88 260 12.50 260
8” 4.50 69.07 1.00 3389 0.13 22073 6.75 175 8.25 260 12.50 260
10” 6.00 107.9 1.50 2439 0.25 14126 8.25 175 10.13 250 14.00 250
12” 6.00 148.6 1.50 2926 0.19 23045 8.25 175 10.63 250 14.00 250
14” 6.00 181.1 1.75 2137 0.25 20560 8.13 150 10.75 200 14.00 200
16” 6.00 231.7 1.88 2436 0.19 30016 8.25 150 11.25 200 14.00 200
18” 6.00 289.4 2.00 1950 0.19 29908 8.38 150 11.63 200 14.00 200
20” 6.00 352.8 1.75 3033 0.13 56766 8.50 150 12.00 200 14.00 200
22” 6.00 422.6 1.75 3330 0.13 74,644 8.63 150 x x 14.00 195
24” 6.00 498.6 1.75 3625 0.13 95882 8.75 150 13.00 195 14.00 195