Tag Archives: expansion joints

Basic Types of Metal Expansion Joints

Much like elastomeric expansion joints, metal expansion joints are used to preserve the integrity of a piping system where the piping is subject to changes in temperature, pressure, vibration, compression, extension, cyclical movements or movements required by usage.

Metal Expansion Joints - FabricationOftentimes, metal expansion joints are used when an elastomeric joint simply cannot handle the extreme conditions – generally high temperature, large temperature range, or high pressure exists in your application. Generally, metal expansion joints can be used from -450°F to +2000°F, depending on the metallurgy, and can also handle pressures from full vacuum to 3,000psi.

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Case Study: Style 4394 ABRA-LINE™ Expansion Joint

Gallagher Fluid Seals represents a number of expansion joint manufacturers, enabling us to provide an expansion joint for any piping system in any industry.  The ABRA-LINE™ Rubber Expansion Joints from Garlock are meant for highly-abrasive applications.

Expansion Joint: Style 4394The Garlock ABRA-LINE™ Style 4394 Rubber Expansion Joint is a multi-convoluted, lightweight expansion joint, designed for lower pressure applications that require significant amounts of movement, axially and/or laterally. Its low spring rates make it ideal for load cell, bin activator, vibrating bin, silo, and shaker boot applications.  The below success story comes directly from Garlock and an application using the ABRA-LINE™ Style 4394 joints.

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FEP-Lined Expansion Joint for Chemical Processing

FEP-Lined Expansion JointGallagher Fluid Seals represents a number of expansion joint manufacturers, enabling us to provide an expansion joint for any piping system in any industry.  One of our more popular expansion joints is the GUARDIAN® 306 EZ-FLO® by Garlock.

It’s a spool-type expansion joint featuring an FEP lining that is fused to the body of the expansion joint.  The GUARDIAN® 306 EZ-FLO® is designed for the chemical processing and pulp & paper industries, where its ability to resist corrosive attack at normal and elevated temperatures and pressures is unequaled.

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The Life Expectancy of Nonmetallic Expansion Joints

expansion jointsExpansion joints are specially engineered products inserted into a rigid piping system to do a number of jobs.

They absorb movement, relieve system strain due to thermal change, stress, pumping surges, wear, or settling, reduce mechanical noise, compensate for misalignment, and/or eliminate electrolysis between dissimilar metals.

When expansion joints are designed, applied, and installed correctly, it is not unusual to achieve a service life of 15-20 years in most industrial applications. Read on to see what our partners at Garlock had to say about troubleshooting in order to expand the life expectancy of nonmetallic expansion joints.

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VIDEO: Flexibility in Your Rigid Piping Systems With Abra-Line

Abra-LineGarlock ABRA-LINE ™ rubber expansion joints offer superior performance, reliability and service life in your plant.  Expansion joints are specially engineered products inserted in a rigid piping system to achieve one or more of the following:

  • Absorb movement
  • Improve thermal stability
  • Relieve system strain due to thermal change, load stress, pumping surges, wear or settling
  • Reduce mechanical noise
  • Compensate for misalignment
  • Eliminate electrolysis between dissimilar metals

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