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

Shell Test Pressure

Shell Test Pressure

Shell Test Pressure

This is what ASME B16.34 says:

7: Pressure Testing
  7.1: Shell Test
    7.1.1: Shell Test Pressure - Each valve shall be given a shell test at a gage pressure no less than 1.5 times the 38C(100F) pressure rating, rounded off to the next higher 25 psi(1 bar) increment.

I have a ANSI CL300 Check Valve Wafer Style NPS12". Operating Temperature - 288C
Operating Pressure - 336 psig

According to ASME B16.5 Table F2-2.2 for A351 Gr. CG8M, working pressure for CL300 at 38C is 720 psig.

Is it acceptable to use 450 psig as the shell test pressure in this case? If not, what should be the test pressure?    

I will appreciate your insight in this. Thanks in advance.



RE: Shell Test Pressure

Are you the end user or the manufacturer of said valve?

RE: Shell Test Pressure

I am the end user. The valve will be used in extreme conditions and the life expectance expected out of it is atleast 25 years.

RE: Shell Test Pressure

Why are you even testing this valve, is this part of new pipe construction or repair, or are you looking to prove test an existing valve?

RE: Shell Test Pressure

This is a newly manufactured valve that has to be hydrotested by the manufacturer as a requirement prior to acceptance.

RE: Shell Test Pressure

The manufacturer is responsible and would follow their procedure for hydrotesting in accordance with ASME B16.5.

RE: Shell Test Pressure

correction ASME B16.34, not 16.5 (flanges and flanged fittings).

RE: Shell Test Pressure

By the way, if you are going to quote or paraphrase applicable paragraphs from Codes and Standards please make sure that you read and copy the necessary paragraph.

Regarding test pressure in this section (a)7.1, it is 1.5X the working pressure at 100 deg F using water. So go to the Pressure-Temperature rating table applicable for the material group and class valve. All of the information is there and as I mentioned above the manufacturer would perform this activity and know this as well.

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


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