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Learn more about the operation details of universal expansion joints, which require only light anchors and minimum guiding.

Universal Expansion Joints

June 18, 2019


Learn more about the operation details of universal expansion joints, which require only light anchors and minimum guiding.

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Watch as the Piping Tech team’s largest expansion joint, 178 inches in diameter, begins its journey to Virginia.


The team at Piping Tech are experts at in the production and design of gimbal expansion joints. Learn more in this webinar!


Learn more the expansion joint with this timelapse video from Piping Tech.

Duct work assemblies can include fabricated elbows, tees, straight sections of duct work, fabric or metallic expansion joints and can be rectangular or round.

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Duct work and expansion joint assembly.

The effective diameter of the bellows is the mean diameter of the convolutions.

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42″ Diameter Neoprene Fabric Expansion Joint for a Generator Cooling Fan in a Power Plant

Heat Exchanger shell bellows are used on fixed tube sheet heat exchangers. Bellows deflection is only axial and can be either extension or compression depending on the differential expansion of shell and tubes. In most cases the tubes are hotter than the shell, moreover tube material is sometimes high alloy, i.e. Stainless steel or nickel alloy, which expands about 50% more than carbon steel.

Dye penetrant testing clamshell
Heat Exchanger Clam Shell Bellows

What is a heat exchanger bellows?

Heat Exchanger shell bellows are used on fixed tube sheet heat exchangers. Bellows deflection is only axial and can be either extension or compression depending on the differential expansion of shell and tubes. In most cases the tubes are hotter than the shell, moreover tube material is sometimes high alloy, i.e. Stainless steel or nickel alloy, which expands about 50% more than carbon steel.

Dye penetrant testing clamshell
Heat Exchanger Clam Shell Bellows
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