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AWWA Flanges

AWWA Flanges

AWWA Flanges

(OP)
I need to solve a 42" shell 'split' conection in a pressure vessel using two 42" AWWA C207-1 flanges.
To do an evaluation of stresses I'm looking for the steel of this flanges.
This PV will have 30 psi of internal pressure design.  
Can anybody inform to me which is the steel of this flanges, to do the calculation?

Thank you in advance.

Mario Valenti

RE: AWWA Flanges

You will have to get a little more information about your flange. Note the design stress and the other caveats.  
I would ask my supplier for a mill test report of some kind. Watch out for typical properties on these reports.

http://www.pacificflange.com/AWWA_general_info.htm

RE: AWWA Flanges

The standard specifies properties and then indicates that A36 of A516-60/70 will meet those properties if the flanges are cut from plate.  Presumably, other steels would as well.  Check with your supplier.

Check to see if the flanges would have whatever data reports you'd need for the work.  Production of AWWA flanges doesn't necessarily require ASME stamps, etc.

RE: AWWA Flanges

mariovalenti, if you are using these in Sec VIII, Div 1, you will most likely have to treat them as Appendix 2 flanges as the AWWA standard is not recognized by UG-44.

If you go this route, you might want to pay careful attention to the Apx 2 limitations on plate flanges.

Regards,

Mike

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