Metal bellows expansion joints (also called Metal Expansion Joint) are compensating elements for thermal expansion and relative movement in pipelines, containers and machines. They consist of one or more metal bellows, connectors at both ends, and tie rod
This expansion joint is exactly like the single unrestrained expansion joint but it is provided with tie rods. When adding tie rods to the metal bellows expansion joint it stops the bellows from overextending. The tie rods act as limit rods and has stops set to allow axial movement to a specifically designed movement.
Whether your media is steam, engine exhaust, hot air, gases, or something else, we can design metal expansion joints based on expected pipe movements, temperature extremes, working pressures, velocity, anchor loads, and other conditions. Stainless steel bellows or special alloy material can be a single set of bellows or dual. Bellows interior can be lined for smooth flow. Spring rates can be modified in construction to reduce anchor loads. End configurations can be flanged or weld ends. Covers are available to protect the outer bellows from the elements. Tie rods or limit rods can be added to control bellow extension.
FEATURES:
Kept in stock
Economical
Comes standard with tie rods and 150# CS vanstoned flanges that allow all stainless steel wetted parts
APPLICATIONS:
Flexible equipment connection when higher temperatures and compression movement is required
Thermal expansion of piping
TEMPERATURE: to 480°F
| Order | Specification(two waves) | Nominal diameter | Compensation amount(mm) | Summit diameter(mm) | Length(mm) |
| 1 | 1.2" | DN32 | 60=±30 | 170 | 245 |
| 2 | 1.5" | DN40 | 60=±30 | 190 | 255 |
| 3 | 2" | DN50 | 60=±30 | 300 | 325 |
| 4 | 2.5" | DN65 | 60=±30 | 320 | 336 |
| 5 | 3" | DN 80 | 60=±30 | 360 | 340 |
| 6 | 4" | DN100 | 60=±30 | 400 | 350 |
| 7 | 5" | DN125 | 60=±30 | 433 | 360 |
| 8 | 6" | DN150 | 60=±30 | 477 | 385 |
| 9 | 8" | DN200 | 60=±30 | 527 | 390 |
| 10 | 10" | DN250 | 60=±30 | 579 | 420 |
| 11 | 12" | DN300 | 60=±30 | 635 | 435 |
| 12 | 14" | DN350 | 60=±30 | 635 | 440 |
| 13 | 16" | DN400 | 60=±30 | 760 | 460 |
| 14 | 18" | DN450 | 60=±30 | 810 | 460 |
| 15 | 20" | DN500 | 60=±30 | 860 | 460 |
| 16 | 2" four waves | DN50 | 120=±60 | 300 | 590 |
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