Expansion Joint / Expansion Joints

Specially designed for absorbing large amounts of lateral (parallel offset) movement in piping systems.

Commonly installed in pipelines crossing building expansion joints, storage tank connections subject to settlement, and low-pressure ducting systems.

Ideal for isolating lateral vibrations and protecting connected equipment, such as pumps and turbines, from piping manifold stresses.

Bellows: Twin (double) bellows configuration made of Stainless Steel SUS316 separated by a central pipe section (Provides maximum flexibility and excellent chemical and corrosion resistance).

Components Material: Available in Mild Steel, SUS304, or SUS316 to suit specific environmental and fluid conditions.

Ending Type: Fixed Flanges (For a rigid, secure bolted installation).

Tie Rods: Equipped with 2 to 4 tie rods spanning the entire length of the assembly.

Inner Sleeve (Liner): (Not specified, but optional inner sleeves can be fitted to prevent flow turbulence).

Axial Movement: No (The full-length tie rods restrain all axial growth and compression).

Lateral Movement: Yes (Primary function; the dual-bellows design allows significant parallel lateral displacement in all planes).

Angular Movement: No (The tie rod configuration locks the unit against angular deflection).

Large Lateral Displacement: By utilizing two distinct bellows separated by a center spool, this joint can absorb much greater lateral offset than a single expansion joint.

Pressure Thrust Restraint: The continuous tie rods completely absorb the internal pressure thrust force. This prevents the bellows from over-extending, eliminates the need for massive main pipeline anchors, and protects delicate equipment nozzles.

Stability: The multi-rod structure provides high mechanical stability, preventing bellows squirm and stabilizing the piping layout under high flow velocities.