Hinged Expansion Bellows
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.
Lateral Expansion Bellows
Lateral expansion joints absorb transverse and lateral movements and include restraints in the form of a ball bearing type tie rod or flat tie bar with bolts or cross hinges. A lateral expansion joint consists of two angular expansion joints connected by an intermediate pipe. The extent of the allowable lateral movement is controlled by a combination of the bending angle of the hinge arrangement and the length of the intermediate pipe.
Axial Expansion Bellows
Metal Expansion Bellows are used in closed piping systems with movements in any direction: axial, lateral, angular or a combination of the three types. Axial expansion joints aim to absorb the axial expansions. They do not change the direction of the flow Additional assemblage distance is not necessary Dividing the pipeline helps to prevent stress of lateral forces
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