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Fabric Expansion Joint

Introduction to Fabric Expansion Joint

Fabric Expansion Joints consist of prefabricated bellows that are mainly flexible connections in air, flue gas pipes and exhaust duct systems found in all kinds of industries. These bellows are able to:

  • Absorb thermal expansions and vibrations
  • To hold parts together and to allow movements
  • To compensate misalignments

Applications of Fabric Expansion Joint:

  • Oil and Gas
  • Power
  • Steel
  • Chemical and Fertilizer
  • Cement
  • Defence and Railways
  • Water

Features of Fabric Expansion Joint

 Fabric Expansion Joint
Able to withstand large movements in short length
Ability to absorb simultaneous movements easily in more than one plane
Very low forces required to move the expansion joint
Minimum Replacement Cost
Noise and Vibration Resistance
Ease of Installation

Design and Installation of Fabric Expansion Joint

There are several parameters required to design an Expansion Joint:

  • Internal Diameter
  • Design Pressure
  • Material of Bellows Element
  • Design Temperature

Key Benefits of Expansion Joint

  • Significant reduction of cold air ingress resulting in improved furnace efficiency.
  • Withstand temperatures of up to 1370°C.
  • Allow unrestricted movement of the tubes while maintaining complete seals.
  • Reduce the possibility of tube damage due to rapid quenching
  • Cost effective with very fast payback on investments.
  • Block radiant heat loss.
  • Personnel safety enhancement.