Appendix 2 Flange Calculation cannot verifies a Stand ANSI flange
Appendix 2 Flange Calculation cannot verifies a Stand ANSI flange
(OP)
Hi all,
When I use Appendix 2 to verify ANSI flange, why the calculated flange thickness is not equal to ANSI standard thickness?
In other words, if I design a non-standard flange, can I use appendix 2 to design it?
Thanks in advance.
When I use Appendix 2 to verify ANSI flange, why the calculated flange thickness is not equal to ANSI standard thickness?
In other words, if I design a non-standard flange, can I use appendix 2 to design it?
Thanks in advance.





RE: Appendix 2 Flange Calculation cannot verifies a Stand ANSI flange
As for your ASME (no longer ANSI) standard flanges, while I am not sure of the exact reasons, it is well known these do not meet Appendix 2 design. I believe that at least part of the reason is they are typically much over-bolted compared to Appendix 2 design.
Try a site-search, this has been discussed before.
Regards,
Mike
RE: Appendix 2 Flange Calculation cannot verifies a Stand ANSI flange
RE: Appendix 2 Flange Calculation cannot verifies a Stand ANSI flange
I have a problem about a flange connection.
A gasket with 285mm OD x 250mm ID doesn't match raised face 285mm OD X 200mm ID of one flange (Type 11 PN63). The other is a 285mm OD X 250mm ID flange fitting. If the flange and the gasket can pass the stress verification per Appendix II, Could I say that connection has no problem?
RE: Appendix 2 Flange Calculation cannot verifies a Stand ANSI flange
Regards,
Mike
RE: Appendix 2 Flange Calculation cannot verifies a Stand ANSI flange
RE: Appendix 2 Flange Calculation cannot verifies a Stand ANSI flange
I hope I have not misinterpreted the question.
Patrick