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!

*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.

Jobs

Components within a spec ina spec break

Components within a spec ina spec break

(OP)
Hi,
If I have a spec break from ANSI 600 (1440psig) to ANSI 300 (750psig). I believe that means that the lowest working pressure rating for any component in the 300 class region should be 750psig. My question is, is there anything wrong with or any problem with having a component higher than that? say 1000psig rating instrument or valve?

As much as possible, do it right the first time...

RE: Components within a spec ina spec break

First it's not ANSI 600 /300, it's ASME class 600 or 300. Max working pressure is determined by the flange material and temperature neither of which you mention

Flange class ratings are step changes and are maximum pressures. Any item rated lower than the flange rating will set a lower limit but a higher one won't raise the max working pressure but just cost more.

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

RE: Components within a spec ina spec break

(OP)
@ LittleInch, Thank you for the response and correction. I was not detailed enough.

As much as possible, do it right the first time...

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


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