Flange Sizing?

[sprintcar]

I can't find the Pressure/Temp ratings for std (ie 600lb) flanges so I need a bit of help.

What flange rating would you recommend for the following?
Pump discharge, cast iron construction
6" diameter
test pressure is 1075psi
operating temperature only 100 degF

Thanks folks!

"If A equals success, then the formula is: A = X + Y + Z, X is work. Y is play. Z is keep your mouth shut."
-- by Albert Einstein

 

[Ashereng]

ANSI 600 A105 CS 100 °F 1480 psig

"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

 

[sprintcar]

THANKS!
Thought I was close but need somebody smarter to confirm it!

"If A equals success, then the formula is: A = X + Y + Z, X is work. Y is play. Z is keep your mouth shut."
-- by Albert Einstein

 

[Montemayor]

sprintcar:

ANSI 600 class will do the job, but the A105 material should be with a FLAT FACE to conform with the obvious flat face on the cast iron construction. Do not attempt to apply a Raised Face A105 ANSI 600 flange on the CI pump. You don't want to to buy another pump casing.

 

[unclesyd]

Adding a little to Montemayor's post I can see problems with getting enough gasket seating stress using a full face gasket and the CI flange on a 6" flange.

What is your gasket material?

 

[Ashereng]

Not smarter. I have a book.

"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

 

[sprintcar]

I need a book like that... or at least a couple of the pages!
Customer asked to do this with a 250lb raised face flange design on the pump discharge.

"If A equals success, then the formula is: A = X + Y + Z, X is work. Y is play. Z is keep your mouth shut."
-- by Albert Einstein

 

[Ashereng]

sprintcar,

I keep a "bound" notebook with me at all times when I work. I jot stuff like this down when I look up the info. Later, I transfer it neatly into electronic format and store it on my USB hard drive.

"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

 

[sprintcar]

Ashereng
Sounds like a great reference.... maybe you need to publish it for the rest of us!

I'm still looking for the reference or formulas to calculate this. They want a 250lb flange on the pump so I need to show them the tables.

Thanks!

"If A equals success, then the formula is: A = X + Y + Z, X is work. Y is play. Z is keep your mouth shut."
-- by Albert Einstein

 

[Montemayor]

Sprintcar:

The information regarding 600# ANSI class flanges that you seek is found at:

http://www.piping-toolbox.com/ansi-flanges-pressure-temperature-d_342.html

In fact, you can find most or all of the piping and flange rating information at the Piping toolbox website.

 

[Frank1344]

Hello Sprintcar,

Have you tried ASME B16.1? Cast Iron Pipe, Flanges and Flanged Fittings.
The pressure classes you are looking for is there like 125, 250.
I hope it helps.
Frank

 

[Ashereng]

Sorry Sprintcar, I don't have 250# data (don't use it). Hope some of sources others have cited will work.

"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

 

[sprintcar]

Thanks folks!!
Montemayor gave me the link I needed and I printed out the table for the engineer. I also explained flat face vs raised.
Problem solved & disaster averted thanks to Eng-Tips experts!

"If A equals success, then the formula is: A = X + Y + Z, X is work. Y is play. Z is keep your mouth shut."
-- by Albert Einstein