Exhaust Expansion Joints

Universal Expansion Joints

Double Lateral Expansion Joint


Exhaust expan-

sion joints  are very flexible expansion joints for low pressure applications.

 

This type of expansion joint is always assembled with pipe-ends. Its low spring rate makes it ideal for vibration absorption.

 

All exhaust expansion joints are available in 4 different lengths: short (K1), medium (M1), long (RLE) and custom length.

The universal expan- sion joint is the most common expansion joint used to absorb axial crimp and expansion in piping systems. It is a single bellow expansion joint, designed to absorb axial, lateral and angular displacements available with pipe-ends or flanges according to European (EN), American (ASME) standards or, on request, JIS flanges.

 

All universal expansion joints are available in 4 different lengths: short (K1), medium (M1), long (RLE) and custom length

 

 

The double lateral expan-

sion joint is a double bellow
expansion joint with an intermediate pipe in between the two bellows. These two bellows each make an angular movement which results in a relative lateral movement of the two end fittings. This type of expansion joint can also absorb some axial and angular movements. Available with pipe-ends or flanges according European (EN), American (ASME) standards or with JIS flanges.

 

All double lateral expansion joints are available in 4 different lengths: short (K1), medium (M1), long (RLE) and custom length


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Balanced Lateral Expansion Joint

Limited Lateral Expansion Joint

Pinned Lateral Expanion Joint


Balanced lateral

expansion joint is a double lateral expan- sion joint which

is equipped with tie-bars. These are threaded rods with conical washers at the welding lugs. These rods prevent axial and angular movements.

 

An exception occurs when there are two balancers, then single plane angular movements are still possible.

 

All balanced lateral expansion joints are available in 4 different lengths: short (K1), medium (M1), long (RLE) and custom length

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Externally Pressurized Expansion Joint

Limited lateral

expansion joints

are double lateral expansion joints which are equipped with limiters. These limiters narrow down the axial movements as determined by the limiter bolts. The lateral and angular movements are equal to these of the double lateral expansion joint.

 

All limited lateral expansion joints are available in 4 different lengths: short (K1), medium (M1), long (RLE) and custom length

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Hinged Expansion Joint

A pinned lateral expansion joint is a double lateral expan-

sion joint
whereby the movements are narrowed down to single plane lateral movement. Axial and angular are eliminated. This is realized by two hinge points built around the double lateral expansion joint.

 

All pinned lateral expansion joints are available in 4 different lengths: short (K1), medium (M1), long (RLE) and custom length

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Gimbal Expansion Joint


Externally pressurized expansion joints are single bellow expan-

sion joints with a cover. This cover allows the pressure to act on the outside of the bellow instead  of the inside. This allows longer bellows and therefore  more absorption than the standard expansion joint.

The hinged expansion joint configuration allows angular

 movement in a single plane. This is realized by building a hinge around the standard angular expansion joint. All movements are eliminated except for the angular movement in a single plane. This configuration is always equipped with fixed flanges.

The gimbal expansion joint allows angular movement in multiple planes. Axial and lateral movement is not
possible. This is achieved by building a construction with two hinge points around the standard angular expansion joints. This configuration is always equipped  with fixed flanges.


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In-Line Pressure Balanced Epxansion Joint

Double Hinged Expansion Joint

Double Gimbal Expansion Joint



The in-line pres-sure balanced

expansion joint is a specific confi-guration with three bellows to minimize axial deflections by restraining the pressure thrust with built-on threaded rods.

 

It’s a good solution when multiple support is not easy to foresee.

A double hinged expansion joint is similar to the pinned lateral expansion joint. It is also a double lateral  expansion joint with a construction with two hinges  built around it.

 

The difference lies in the orientation  of the hinges. A double hinged expansion joint allows  single plane lateral movement and single plane angular movement.

A double gimbal expansion joint is a double lateral expansion joint with a construction built around it which has four hinge points.

 

This allows multi-plane lateral movement and multi plane angular movement. Axial movement is not possible.


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