×
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 Working Pressure and Flange Rating

Pump Working Pressure and Flange Rating

Pump Working Pressure and Flange Rating

(OP)
Dear Friends,

I need to know the relationship between pump working pressure & flange class rating...

For example (Pump working pressure 325 psi and flange drilled to PN16 ....

Note: if this subject has been discussed before, please send me the link.

Thanks,
Waseem

RE: Pump Working Pressure and Flange Rating

Is the "working pressure of 325psi" you have given the operating pressure or the suggested maximum operating pressure for the pump?, rated and working are not the same -- as for PN16 flanges you can check yourself what the rating is.

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

RE: Pump Working Pressure and Flange Rating

(OP)
the 325 psi is manufacturer design maximum working pressure ...

RE: Pump Working Pressure and Flange Rating

Then a PN 16 flange appears to be significantly under rated.

The relationship is quite simple - maximum pump discharge pressure (considering worst case inlet pressures) MUST be lower than the discharge flange rating at the operating temperature. This applies to any piping system, not just pumps.

Note that the design maximum may be with the biggest impellor and not your particular case, but you're only giving us snippets of information so it's difficult to see why the vendor has done this. Maybe the density of the fluid you're pumping is quite low? Who knows?, only you and you're not giving us much to go on here.....

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

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