Hinged Expansion Bellows

Hinged expansion joints can be supplied in two types
- Single hinge expansion joint
- Universal Hinge Expansion Joint
Both are designed to absorb angular rotation in one plane only, by use of a pair of pins passing through hinge plates attached to the expansion bellow.

A axial bellow with overall length restrained by hinge hardware are designed to accommodate pressure thrust.

Universal type hinged bellow, where two bellows separated by a pipe spool with overall length restrained by hinge hardware designed to contain pressure thrust. A hinged universal expansion joint accepts large lateral movements in a single plane with very low spring forces.

Hinged Bellows are normally prevented by their design from deflecting axially, either an extension or compression.

Hinged Bellows also have added benefits of positive control over the movements, eliminates pressure thrust forces, transmits external loads, prevents torsion on bellows and are the most efficient in absorbing of deflections caused by thermal fluctuations.