×
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

Valve Selection
2

Valve Selection

Valve Selection

(OP)
How do you determine the differential pressure (P1 & P2)  of valve for a new installation?

RE: Valve Selection

It's a little difficult to answer your question but in general terms, the inlet and outlet pressure for a valve is set by the engineer when they design the system.  As you change the flow rate through the system, that changes the pressure losses and thus the pressure at the inlet and outlet of the control valve.  Of course, if you change operating pressures in the system that will also affect the pressures the control valve will see.

Control valves don't 'create' a pressure drop, the system imposes the pressure drop on the control valve, it's a key difference.

RE: Valve Selection

(OP)
Thanks for the prompt reply, but I still cannot find the answer.

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