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Knowledgebase Article 1043
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Question:
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Why do I get the message "For Class 150 flanges,
ASME B16.5 para. 5.4.3 recommends gaskets to be in accordance
with Annex C, Table C1, Group No. I"? What does this message mean?
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Answer:
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This message will always be returned by
COMPRESS whenever Class 150 flanges are
specified. The message is for information
only and does not indicate any particular
design problem.
If the user does not wish the message to
appear, he can select the option "Suppress
warning messages" on the Deficiencies dialog
that appears when the calculations are run.
(Warning messages can be restored using the
Set Mode Options dialog/Environment tab; remove
checkmark from "Suppress warnings from
deficiencies list").
The gasket selected in COMPRESS for ANSI/ASME
B16.5 and B16.47 flanges has no effect upon the
warning message or upon the flange MAWP rating.
The selection in COMPRESS of gasket type for
standard flanges is not used for calculation
purposes; it is reported in Drafter and
Coster as well as exported in the XML
data exchange file.
Standard selection data is provided for
Flexitallic gaskets. No other gasket
manufacturers offered to make their gasket
information available in electronic format
suitable for inclusion in COMPRESS. Users can
add other gasket types by clicking the
"Edit Gasket List" button and
entering the necessary information.
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