This expansion joint contains only one bellows and is designed to allow angular rotation on one plane using a pair of pins attatched to the expansion joint’s ends.
The hardware is designed to restrain pressure load and external load that is considerably reduced with the anchors compared to those without tie rods. This type of expansion joint can’t absorb axial movements due to the rigidity of the system (hinges) which does not allow these type of movements. Hinged expansion joints are usually used in sets of two or three or in combination with two Gimbal expansion joints.
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