×
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

API 526 PRV outlet sizing.

API 526 PRV outlet sizing.

API 526 PRV outlet sizing.

(OP)
Dear all,

I am conducting some research into the outlet sizing of PRV complying to API standards. According to API526 a 1x2" sized PRV changes to a 1.5x3" once an inlet flange class of 2500 is reached.

I realize that the inlet flange changes from 1" to 1.5" due to the mechanical requirements of the inlet flange (correct?) but the outlet requirements are not so clear.

I have assumed that the outlet increased in size is to reduce choking and subsequent pressure buildup due to the increased flow rate but I cannot find any information to confirm this assumption, does anyone know where API justifies this outlet size change in PRVs?

Thanks for your help.

Steven

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