The photographs above show a special slip type expansion joint designed by the Sweco Fab Division of Piping Technology & Products, Inc. for installation in the hydrocarbon flaring system of a combination of design features and material specifications. At the top right of the picture is the inner barrel which is uniquely plated to be corrosion resistant. At the bottom right of the picture is the aluminum bronze bearing sleeve which provides strength and guidance for the inner barrel. At the left is the assembled unit shows the outer barrel which contains the six packing seals, the follower and the retaining ring. This joint is to be installed in a horizontal position in the mid span of 40 feet between guided supports. The design conditions are 12” of movements, 650oF, and 50 PSI of internal pressure.

Upcoming Live Webinar
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Variable Spring Support Design, Size Selection, Installation & Maintenance Webinar
Date: Thursday, March 30, 2023 - Register for 10:00 am OR 2:00 pm
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Live Webinars are 1 PE/PDH Credit for TX Professional Engineers
This Webinar will focus on the different types of variable spring supports and big ton variable spring supports. Learn about the special features available, in addition to the design of a variable support. View how the different coil configurations produce a unique response to an applied load and see how a spring assembly is loaded. Discover the basic steps in selecting a hanger design and the step-by-step process used to size a spring for your application. Learn about the different attachments, testing, and installation and maintenance procedures. View examples of failed supports provided by our Field Service Division and learn why they failed and how to prevent it. Gain knowledge of the valuable tips used when deciding to replace or re-calibrate a variable spring support, as well as adjustments, shutdown, and isolation procedures.
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Online Course
Expansion Joint Application and Design
Our Expansion Joint course was developed for the following disciplines…
- Piping system designers that may decide to use expansion joints
- Expansion joint designers use the information provided by piping system designers to determine the best design to meet the requirements.
- Designers that use modern software systems to evaluate different options
- Engineers / Managers: field, maintenance, process, operations, construction, surveyors
*This online course is approved for 8 hrs. P.E. Credits
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