×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Rubber or steel expansion joints in a sludge pipeline

Rubber or steel expansion joints in a sludge pipeline

Rubber or steel expansion joints in a sludge pipeline

(OP)
We will need expansion joints, to account for thermal expansion, in a pipeline DN150 carrying sewage sludge (between digester and HX).

Looking at different expansion joints, I prefer rubber ones like these: https://elaflex.de/en/products-catalogue/section-4...

An alternative would be steel ones (like these https://online.flippingbook.com/view/267448/100/), however I'm hestitant because sludge will accumulate in the bellow (more so than with the rubber joints).

with both kinds of joints it would be possible to isnert a short length of pipe, jowever I see the risk of sludge accumulating inbetween, hindering the movement of the joint.

However I don'T have real experience to go by - most installations I've seen get by without expansion joints to to short pipe runs. Does the type matter much? Do any of you have experience suggesting one above the other?

RE: Rubber or steel expansion joints in a sludge pipeline

You may be able to accommodate the expansion if you zig zag the pipe instead of using a straight pipe.

RE: Rubber or steel expansion joints in a sludge pipeline

Flex-tend couplings could also be an option. I have used them to cater for seismic movement on a wastewater force main, but imagine they would work for expansion/contraction too

https://ebaa.com/products/flex/flexible-expansion-...

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close