×
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

Pump Recirculation Piping - Best Practice

Pump Recirculation Piping - Best Practice

Pump Recirculation Piping - Best Practice

(OP)
When we pipe up our PD pumps (sliding vane) it is normal practice to provide a mechanical bypass valve and manual bypass valve at the discharge to account for any accidental pump dead-heading or to reduce process flow. This bypass/recirc line is almost always piped back to our supply tank. I was wondering if there were any major issues with piping that line back to the inlet of the pump instead of the tank. Our main process fluid that I am concerned with is anhydrous ammonia. Thank you.

RE: Pump Recirculation Piping - Best Practice

Yes, the mass of fluid in the piping is much, much less than in the tank, so it will heat up much, much faster when recirculating. Vapor lock and cavitation issues come to mind.

Good luck,
Latexman

RE: Pump Recirculation Piping - Best Practice

For future reference, post these type questions in the pump forum.

"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek

RE: Pump Recirculation Piping - Best Practice

(OP)
Ok, will do. Thanks for the help.

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