×
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

Pipe Line Venting

Pipe Line Venting

Pipe Line Venting

(OP)
There is a measured high discharge pressure / excessive piping loss vs. calculated (see attached - measured values in red) & believe it is due to air entrainment. It appears multiple vents only with vacuum check (no way for air to re-enter system) are needed (5 locations at risers. The vacuum check would prevent draining a high level north tank thru the vents.

The pump discharge pressure of 36 psi at 650 gpm agrees with the pump curve (system piping issue). The target for a worst case is 800 gpm at 76 ft.

I am looking for a consensus before adding the vents. Note there was one manual vent via a ball valve added already to the system but with no reduction in the system pressure.  

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