A hinged expansion joint is a metallic assembly, that can rotate in a single plane, used to absorb changes resulting from piping thermal expansion or contraction. alt=Hinged Expansion Joint, Hinged Expansion Joint - U.S. Bellows, Inc. They include hinges, attached to the expansion joint ends with a pair of pins, which allow angular movement in a single plane, restrain the pressure thrust, and prevent the expansion joint from deflecting axially, either in extension or compression. It is recommended that the hinges should be used in sets of two or three. The

expansion joint An expansion joint, or movement joint, is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials, and vibration, or to allow movement due to ground settlement or seis ...

hinges provide for angular movement and will resist pressure thrust forces. Individual hinged

s used in piping systems are restricted to pure angular rotation by its hinges. As a pair, hinged expansion joints will function together to absorb lateral deflection. Advantages of hinged expansion joints are that they are typically compact in size and structurally rigid.

Applications

* Air, Steam, & Flue Gas Ducts * Power Plants * Chemical Industry * Gas Turbine System * Petrochemical Industry * Primary reformer ducts & burners * Steel Plants

References

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External links

* U.S. Bellows, Inc. http://www.usbellows.com *

American Society for Testing and Materials ASTM International, formerly known as American Society for Testing and Materials, is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, an ...

(ASTM) http://www.astm.org/ *

Expansion Joint Manufacturers Association The Expansion Joint Manufacturers Association is an organization of a metal bellows expansion joint manufacturers. It was founded in 1955 to create and maintain a set of standards for quality expansion joint design and manufacturing. The EJMA stand ...

EJMA http://www.ejma.org Structural connectors