×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

HOW TO WELD THIS?

HOW TO WELD THIS?

HOW TO WELD THIS?

(OP)
SO i am welding some sanitary ends to a piece of stainless tube to create a manifold. currently the od of the tube is 0.75inches (19.05mm) and so is the mating part on the triclamp end. Now my question is is it possible to cut an arc on the triclamp end and weld it to the manifold tube ? or should I cut a large hole (same OD as the pipe) into the long tube then insert the triclamp piece inside the long tube and weld. I could not find a weldolet triclamp fitting off the shelf.

RE: HOW TO WELD THIS?

What you drew is the "usual way".

RE: HOW TO WELD THIS?

Your image shows a typical arrangement for welding thin wall tubes together (fishmouth to the end of one of the members). Seems like that design would be preferable to inserting the triclamp fitting into the long tube.

RE: HOW TO WELD THIS?

Yes, the preferred approach for bioprocessing would be to insert the triclamp into the manifold flush and weld using a full penetration weld from the OD.

RE: HOW TO WELD THIS?

There are basically 3 ways you can do it.
1 Install equal tees
2 Use the "Pulled Tee" method
3 Or as metengr has stated - fishmouth with a full penetration weld.

1 Probably the quickest and easiest.

2 Have previously used the "pulled tee" method and it works quite well.
A hole is cut in the run pipe and a steel ball (larger than the hole) is mechanically pulled through the hole forming a "tee" in the run pipe.The ball is the same size as the ID of the branch pipe.

3 The last is the hardest as due to it being a sanitary application zero internal defects are allowed and you only get one chance.
Try doing additional repairs on thin tubing and distortion will ruin the manifold.

Here is a link I found
http://hollandaptblog.com/2014/02/17/the-best-tech...

Hope that helps,
Cheers,
DD

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!


Resources