×
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

ASME B16.34 CLASS 900 WELDED END SCHEDULE CLARIFICATION

ASME B16.34 CLASS 900 WELDED END SCHEDULE CLARIFICATION

ASME B16.34 CLASS 900 WELDED END SCHEDULE CLARIFICATION

(OP)
Hey to all,
i have one general query is that is there any clause or article in any valve design standard which talks about which pressure rating CLASS valve suitable or equivalent to which pipe schedule?
actually we are making CLASS-900 Butt welded end steel globe valve that it is suitable for pipe schedule 80 and pipe schedule 160 but i want its written justification in any standard,
or should look for pipe pressure rating chart to match with valve pressure rating chart, to see in which schedule category its lying?
kindly give me clarity.
thanks.

RE: ASME B16.34 CLASS 900 WELDED END SCHEDULE CLARIFICATION

In short no.

Connecting pipe wall thickness or schedule varies by many things including design code used, design pressure (can be less than max class rating), pipe material, pipe design temperature, corrosion allowance and company standards.

Any chart will only give you a guide.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: ASME B16.34 CLASS 900 WELDED END SCHEDULE CLARIFICATION

(OP)
Ok thanks.

RE: ASME B16.34 CLASS 900 WELDED END SCHEDULE CLARIFICATION

I would ask a similar question but coming from another direction

What maximum size pipe you can attach (weld or flanged) to valves and not overstress the valve body, assuming the pipe is up to max of the piping code stress?

There must be a limit, you cannot weld 12.7mm wall pipe to valve where the body is only 6mm thick and max out the stress in the pipe.

B13.34 does have min body wall thickness. Should attached pipe wall thickness be function of the valve body wall thickness?

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