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Hinged Pipe Expansion Joint

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Hinged Pipe Expansion Joints contain hinges or pivots which allow the unit to bend in a single plane. These units are designed to restrict axial deflection, either in extension or compression. The hinge mechanism is typically designed to accept full pressure thrust. Also, because of the hinge mechanism’s design, shear loads, such as from the weight of adjacent piping, can be accepted by this pipe expansion joint, relieving the piping designer of having to provide additional supports and anchors required by the Single type.

Features

  • Angular motion in all planes
  • Positive control over movement
  • Eliminates pressure thrust forces
  • Transmits external loads
  • Bolsters dead weight
  • Prevents torsion on bellows
  • No main anchors required
  • Minimum guiding required
  • Low forces on piping system
  • Most efficient in absorbing thermal deflections

Technical Information

Installation & Maintenance (Metallic Expansion Joints)
Hinged/Gimbal Expansion Joint Examples
Types of Metallic Bellows Deflections
Bellows Expansion Joint Loads
How to Look for Signs of Expansion Joint Failure
View more Technical Information

 

FAQs

Do Hinged Expansion Joints have to be designed for pressure thrust?

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Case Studies

8/10/22: Hinged Expansion Joints Custom-Designed for a Process that Produces High-Density Polyethylene (HDPE)

8/19/19: 66″ Diameter Hinged Expansion Joints Designed for a Chemical Plant

7/30/18: 11 Foot Diameter Hinged Expansion Joints Designed for Vacuum Service in an Air-Cooled Condenser Unit in New York

2/16/16: 30″ Dia. Hinged Expansion Joints Designed for a Pipeline in Mexico

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