Use of Non-ASME Standard Flanges in Pressure Vessels
Use of Non-ASME Standard Flanges in Pressure Vessels
(OP)
Dear Experts,
Can we use EN 1092-1 flanges in an ASME U-Stamp vessel?
Is there any provision in ASME Div. 1 to use these flanges and how to set temp-pressure rating?
Thank you.
Can we use EN 1092-1 flanges in an ASME U-Stamp vessel?
Is there any provision in ASME Div. 1 to use these flanges and how to set temp-pressure rating?
Thank you.





RE: Use of Non-ASME Standard Flanges in Pressure Vessels
RE: Use of Non-ASME Standard Flanges in Pressure Vessels
Regards.
RE: Use of Non-ASME Standard Flanges in Pressure Vessels
Material is SA 105, We will set pressure temperature rating as per appendix 2.. Does ASME VIII Div. 1 permit use of dimensional standard other than ASME?
Dear Jano6924,
EN 1092-1 is not referred in Table U-3 and UG-44.
Is there any other solution?
Regards.
RE: Use of Non-ASME Standard Flanges in Pressure Vessels
ASME VIII-1 doesnt allow other materials than those listed in II-D, unless you apply for a code case.
just to be sure, you have SA105 flanges that conform to the requirements of the EN 1092-1 standard? sounds weird ...
RE: Use of Non-ASME Standard Flanges in Pressure Vessels
I agree on that using EN 1092-1 flanges on an ASME stamped vessel sounds weird.
However, you can choose to use ASME B16.5 or B16.47 flanges IF permitted by vessel specification and local regulations. In such case you can use pressure-temperature ratings listed in these standards.
Hope this helps.
RE: Use of Non-ASME Standard Flanges in Pressure Vessels
Thanks for your reply.
Let me elaborate more to make easy.
We have a vessel and all mating flanges are PN 16, Now Owner is asking to have a U-stamp vessel with PN 16 rating flanges.
Flanges material will be SA 105 and dimensions as per PN-16 rating (See attached pic for dimensions of PN 16 Flanges).
SA 105 is listed material so no worry about that, but how about the dimensional standard?
Can we accept PN 16 flanges and dimensions as per EN 1092-1 instead of B 16.5?
if yes then on what basis as per ASME VIII Div. 1?
Regards
RE: Use of Non-ASME Standard Flanges in Pressure Vessels