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Seismic Joints & Expansion Loops

Supplier: Pacific Hoseflex

Pacific Hoseflex Seismic Joints and Expansion Loop's flexible loop applications include thermal expansion and contraction and/or building expansion and contraction (singularly or in combination with seismic considerations).

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PHF Seismic Joints and Expansion Loops

They are Engineered by the system designer to account for the cumulative movement(s) of each individual system.

Piping used in applications and locations subject to seismic conditions have their own set of unexpected random movements. The random motion common to earthquakes requires that seismic expansion joints be capable of movement in any direction.

Of the 6 possible directions, PHF sees axial movement of the hose in only two of them compared to four in an "L" shaped assembly. Seismic expansion joints orientation can be changed relative to the piping, further minimising the likelihood of compressive movement.

Significant cost and safety benefits found in Pacific Hoseflex Seismic Expansion Joints:

  • It is an inexpensive alternative to dual-tied bellows expansion joints and especially ball joints.
  • During an earthquake, it protects equipment by allowing boilers, chillers, fan-coil units and other systems to move independently of the building, Hospitals, high rises and commercial plumping applications.
  • Installed at the connection also prevents nozzles from cracking or shearing off.
  • A break in the gas pipe work could start a fire, which can of course be devastating. This Australian Gas Approval (AGA).
    • Certified seismic expansion joint will compensate for the movement that occurs during any seismic activity such as an earthquake.
  • Watermark Approved
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