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In-Line Pressure Balanced Expansion Joint

In-Line Pressure Balanced Expansion Joints

  • In-Line Pressure Balanced Expansion Joints consists of single or double (universal) bellows to accept the piping induced axial compression, extension and lateral movements.
  • An oversize bellows with approximately two times the area of the flow bellows is used to create an annular pressure chamber that produces a balancing pressure thrust force.
  • The rods are used to link the bellows elements and contain the pressure thrust force. In-Line pressure balanced expansion joints are typically used in straight pipe runs between intermediate anchors (non pressure thrust resistant) or adjacent to rotating equipment that cannot operate with large externally applied loads.

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