Tied Expansion Joint

Tied Expansion Joint Designs

Tied Expansioin Joints

Most Common Types:

Hinged Expansion Joints

In-line pressure Balance Expansion Joint

Gimbaled Expansion Joints

Tied Single & Universal Expansion Joints

Features:

Single or dual bellows with restraining hardware

Typically used for high pressure service

More complex=higher cost for expansion joint

Limited degrees of freedom

Pressure thrust restrained by hardware

Anchors only affected by bellows spring rate=low force

Expansion Joints Made using a Single or Multiple Bellows

Tied = NO Pressure Thrust

Single-Hinged Expansion Joint

Angular rotation in one plane

Double –Hinged Expansion Joint

                                            Lateral movement in one plane

* Option for slotted hinged joints