Expansion Joints Type

An expansion joint is a mid-structure separation in building construction to alleviate building materials induced by building movement. Expansion joint systems bridge the gap and restore building assembly operations while tolerating predicted actions. Development coordinated transitions are critical for a sealed, safe, and energy-efficient building envelope.

8 Important Types of Expansion Joints

Single Unrestrained

This is the most basic expansion joint possible, with just one bellows section and end connectors. In terms of anchoring and guidance, this form of expansion joint requires maximum control over the nearby pipes.

Universal Expansion Joint

A central pipe portion connects two below parts in this expansion junction. This design allows for significant lateral deflection. In addition to lateral movement, the universal can allow for axial and rotational motion. This expansion joint does not have the necessary hardware to withstand pressure thrust. Like the single unconstrained growth common, the universal expansion joint must be adequately secured and supported.

Single Tied Expansion Joint

This expansion joint is identical to the single unrestrained expansion joint, except it includes tie rods. When tie rods are added to the expansion joint, the bellows are prevented from overextending. The tie rods serve as limit rods, with stops placed to enable axial movement to a particular direction.

Tied Universal Expansion Joint

This expansion joint is identical to the universal expansion joint, except the tie rods are built into the unit. By using tie rods, you may limit pressure thrust. The pressure balancing development joint will not permit external axial movement until this pressure thrust force is overcome.

Pressure Balanced Elbow Expansion Joint

This expansion joint controls the pressure thrust and balances the pressure push, so the nearby pipe or equipment is not anchored. This pressure-balanced elbow expansion joint may be configured as a single or universal joint depending on how much lateral movement is necessary.

Gimbal Expansion Joint

There is just one bellows segment in this expansion joint. The gimbal expansion joint uses two pairs of hinges coupled to a common centre floating ring to enable angular rotation in any plane. The gimbal expansion joint is often used in threes or with the hinged development joint.

Hinged Expansion Joint

This expansion joint has a single bellows portion and is only intended for angular movement in one plane. The hinge hardware is stiff in the axial direction to prevent axial movement of the expansion joint in piping systems. The hinged expansion joint is often used in threes or gimbal expansion joints.

In-Line Pressure Balanced Expansion Joint

This expansion joint is unique because it can absorb lateral, axial, and angular movement. This in-line pressure balanced expansion joint is used where primary anchoring is impossible, or pressure loads for equipment such as pumps and turbines are too high.

Other Types of Expansion Joint include

• Externally Pressurized Expansion Joints
• Toroidal Expansion Joints
• Thick Wall Expansion Joints
• Slip-type Expansion Joints
• Rectangular Metallic Expansion Joints
• Refractory Lined Expansion Joints
• Fabric Expansion Joints
•  Rubber (Neoprene) Expansion Joints

Designers may now wrap the whole building exterior while ensuring life safety by selecting joint expansion systems that connect and are guaranteed for continuity of seal across like or different technologies.