Universal Gimbal‑Hinged Metallic Bellows Joint for Multi‑Directional Displacement

Model NO.	DN40-DN2000
Material	Stainless Steel
Application	Chemical

Universal Gimbal-Hinged Metal Expansion Joint is a specialized mechanical device designed for industrial piping systems. Its core function is to safely absorb significant multi-dimensional movements - specifically angular and lateral displacements in any plane - while simultaneously containing internal pressure and withstanding pressure thrust loads.

Core Function: Multi-Plane Movement Absorption
    Its primary purpose is to compensate for pipe movements that occur in multiple directions simultaneously. Unlike simpler hinges that move in only one plane, the gimbal (or universal hinge) mechanism allows for angular rotation in any spatial plane.

Pressure Thrust Management
    A critical feature is its ability to restrain the pressure thrust force generated by the internal fluid pressure acting on the bellows area. This prevents this force from being transferred to adjacent pipes, pumps, or equipment, which is essential for system safety and stability.

Typical Industrial Applications
    It is typically used in demanding applications where complex piping movements are present. Common examples include large turbine exhaust systems, catalytic cracking units in refineries, chemical reactors, and high-temperature heat exchangers. Its robust design makes it suitable for high-pressure and high-temperature environments.

Structural Components
    The main structure consists of two bellows connected by a central pipe (spool). The movement and restraint are managed by a set of components including hinge plates, pins (forming the gimbal mechanism), tie rods, and lugs, all working together to allow controlled flexibility.