×
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

ANSI Classes & Differential pressure

ANSI Classes & Differential pressure

ANSI Classes & Differential pressure

(OP)
hi,

i noticed that each valve is manufactured accordingly to
ANSI class which i suppose it is something to do with the
pressure rating.
ex : 2" ball valve ANSI class 600
can anyone help me by telling me what does ANSI classes
refers to and how does these classes being rated and is
there any website where i can get more details ?

secondly, is there a formula to calculate differential
pressure of a system ? take a 2" ball valve for instant.
does it relate to Cv of a valve ?

hoping to know

bourne

RE: ANSI Classes & Differential pressure

See Thread 408-21855 for discussion of Class. Allowable pressures are directly related to the class number, e.g., a Class 600 valve can operate at twice the pressure as a Class 300 for a given temperature/material. However, this relationship does not apply to Class 150. See ASME B16.34 Annex F for specifics.

Cv is related to the type of valve, the manufacturer's particular design (which establishes the flow geometry), and size. If you need to size a valve, use the manufacturers Cv tables.

RE: ANSI Classes & Differential pressure

I'd suggest you take a look at ANSI B16.5.  There should be a copy around your workplace.  Most pressure valve catalogs will also have excepts from it for the pressure/temperature tables but they won't have the entire text for you to read.

RE: ANSI Classes & Differential pressure

(OP)
to owlscreech and TD2K,

thanks for your precious information.

best regards,

bourne

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! Already a Member? Login


Resources

White Paper - Implementing a Multi-Domain System
IoT systems are multi-domain designs that often require AMS, Digital, RF, photonics and MEMS elements within the system. Tanner EDA provides an integrated, top-down design flow for IoT design that supports all these design domains. Learn more about key solutions that the Tanner design flow offers for successful IoT system design and verification. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close