×
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

Pressure drop at inlet of PSV

Pressure drop at inlet of PSV

Pressure drop at inlet of PSV

(OP)
Does anybody know how to determine if PRV(PSV) will end with chattering if the orifice is oversized?

RE: Pressure drop at inlet of PSV

Chattering is caused by excessive (greater than 3% of set pressure and no adjustment in blowdown) inlet pressure drop.  It is a relatively high frequency dynamic process.

Cycling  is caused by too large an orifice a nozzle size PSV.  It is a relatively low frequency dynamic process.

Good luck,
Latexman

RE: Pressure drop at inlet of PSV

(OP)
Can you tell me if there is a guide for how to calculate if inlet pressure greater than 3 %?

RE: Pressure drop at inlet of PSV

At the top of the post in the Google search block, put "inlet pressure drop" (include the quotation marks).  The radio button for Eng-Tips Forums should be selected.  Left click Search.  Then read the pertinent posts.

Good luck,
Latexman

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