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

SPEC BREAK VALVES

SPEC BREAK VALVES

(OP)
Dear all,

Can anybody enlighten me on "what is a spec break valve" Can this be an alternative to ESDV ball valve.

We are working on a greenfield project for Upstream Gas Well project with an EPC contractor. In phase 1 of the gas well project we supplied ESDV BALL VALVES to a different EPC contractor.Phase 2 of this project is being executed by a different EPC contractor and understand from them according to their design and technology they have replaced ESDV valves to a spec break valves.

Can anyone in Industry help me with more details.

Thanks and Regards,

Anand

RE: SPEC BREAK VALVES

"Specification break" in piping systems refers to the point of transition from high to low pressure, or between high and low temperature service (sometimes), or between corrosive and non-corrosive environments - a point of transition when different material class is used (that is where the name "spec break" comes from). This is usually a valve, but is not necessarily an ESD valve - it can be any type of valve, also manually actuated, depending on the actual configuration.

See attached file, developed and published years ago by a member of another engineering forum. This should clear your doubts.

Dejan IVANOVIC
Process Engineer, MSChE

RE: SPEC BREAK VALVES

(OP)
Dear Dejan,

Thanks for your response. Incidentally I also happened to download the same specification. Though I could understand the application aspect of spec break yet not able to visualize the kind of arrangement between such break points. In other words between a HP line and LP line what will be the kind of spec break valves provided.

Would appreciate if you can guide me to some OEM offering such valves so that I can understand better.

Thanks and Regards,

Anand

RE: SPEC BREAK VALVES

It is a valve like any other valve. For example, let's say there is a piping specification break from 300# to 150#, on the isolation valve (e.g. manual ball valve, for the sake of illustration) downstream of a control valve. The spec break valve in this case would be rated for 300# and the valve's downstream flange would be attached to 150# piping.

"Spec break valve" means only that piping specification changes on (after) the valve, it does not indicate any special valve type.

Dejan IVANOVIC
Process Engineer, MSChE

RE: SPEC BREAK VALVES

(OP)
Dear Dejan,

Great !!! Thank you very much for your quick and kind response. Now I have a better understanding on this. We will get the process details and valve type from contractor to attend their requirement

Thanks and Regards,

Anand

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