Fabric Expansion Joint

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Keyser Fabric Expansion Joints Movement

Movement Capabilities
Non-metallic ducting movements can be calculated on the design and maximum excursion temperatures. One unit of fabric expansion joint is able to handle combined axial, lateral, angular and torsional movements. The expansion joint are carefully placed to minimize the number of expansion joints required while absorbing all of the duct movements.

Fabric Expansion Joints Movements

Set Back Requirements:
Proper setback reduces the thermal transfer effect on the inner face of the expansion joint from particles in the gas steam. The expansion joint is moved outward from the gas stream to prevent the joint from protruding into the gas stream when operating under negative pressures.

Active Length:
Greater movements can be achieved by increasing the active length of the expansion joint.