Axial Lateral Angular - expansionjointsindia.com

How a Bellows Works A bellows is a flexible seal. The convoluted portion of an expansion joint is designed to flex when thermal movements occur in the piping system. The number of convolutions depends upon the amount of movement the bellows must accommodate or the force that must be used to accomplish this deflection. The convoluted element must be strong enough circumferentially to withstand the internal pressure of the system, yet responsive enough to flex. The longitudinal load (pressure thrust) must then be absorbed by some other type of device.

Universal AU Expansion Joints consist of two bellows separated by a pipe spool. This configuration accommodates large lateral movements, in addition to axial compression and extension and angular deflection.

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  Lateral, Axial, Angular, Axial lateral angular

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