7 min read
Expansion Joint Selection: First Read the Movement Correctly
An expansion joint absorbs the movement in the line. If the type of movement is read wrongly, even a correctly manufactured produc...
Expansion joints articles
Technical articles on Expansion joints: valve and expansion joint selection, application and installation notes.
Articles
6 min read
Expansion Joint End Types: Grooved, Flanged and Weld Neck
The end type decides how fast the line goes up, whether the joint can be removed later, and how many leak points it adds. On a tie...
6 min read
Installing Expansion Joints: Anchors, Guides and Commissioning
A correctly selected joint still dies in a few seasons if the support scheme is wrong. What directs movement into the joint is not...
6 min read
Vibration-Absorbing Joints: Cutting the Path at Pumps, Compressors and Fans
Much of the noise a pump makes travels through pipe and concrete rather than air. A vibration-absorbing joint cuts that path — but...
6 min read
Pipe Expansion Joints: Expansion Accumulating in a High-Rise Riser
In a riser, expansion accumulates over the whole run rather than per floor. The first symptoms are banging inside the shaft and le...
6 min read
Bellows Squirm and Externally Pressurised Joints: Reversing the Pressure
A long, slender bellows pushed by internal pressure buckles sideways off its axis. The externally pressurised design removes that...
6 min read
Elastomer Selection in Rubber Expansion Joints: Ambient Matters as Much as Fluid
In a rubber expansion joint the decision that sets service life is the body compound, and it depends not only on the fluid but on...
6 min read
Omega, U and V Flex: How the Profile Sets the Movement Capability
In a flexible element it is the shape of the convolution, not the material, that absorbs movement. Omega, U and V profiles behave...
6 min read
What Do Limit Rods Do? The Part You Must Not Remove
Limit rods are not an accessory to be removed for easier installation; they are the load-carrying part of the joint, taking the pr...
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