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Steve:<br>
<br>
Thanks for your contributions to this list ... you are one of the
regular posters here from whom I always learn something useful.<br>
<br>
I think that your referral to ASME is exactly on target. In fact, I
found the following link that describes some of the issues and
challenges associated with trying to use Conflat flanges in
pressure-rated vessels:<br>
<br>
<a class="moz-txt-link-freetext" href="http://mtm-inc.com/reduce_project_risk/asme_commercial_vacuum_flanges/">http://mtm-inc.com/reduce_project_risk/asme_commercial_vacuum_flanges/</a><br>
<br>
Dennis, it sounds as if Meyer Tool & Mfg might be a good source
of information if you are looking at exploring this issue further.<br>
<br>
Good luck,<br>
<br>
John<br>
<br>
<div class="moz-cite-prefix">On 10/23/2014 7:14 AM, Paolini, Steven
wrote:<br>
</div>
<blockquote
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Dennis,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">In
my humble opinion, I would refer to ASME for any pressure
related component use, they are quite particular in their
specifying of vessels and components.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Steve
Paolini<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Equipment
dood<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Harvard
University Center for Nanoscale Systems.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a class="moz-txt-link-abbreviated" href="mailto:labnetwork-bounces@mtl.mit.edu">labnetwork-bounces@mtl.mit.edu</a>
[<a class="moz-txt-link-freetext" href="mailto:labnetwork-bounces@mtl.mit.edu">mailto:labnetwork-bounces@mtl.mit.edu</a>]
<b>On Behalf Of </b>Dennis Schweiger<br>
<b>Sent:</b> Wednesday, October 22, 2014 10:57 AM<br>
<b>To:</b> Fab Network<br>
<b>Subject:</b> [labnetwork] Knife edge flange pressure
application<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Good morning all,<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Is anyone out there using a standard
vacuum style knife-edge flange (Conflat), in a pressure
delivery application? If so, I'd be interested to hear
your application, as well as any information you might
have in regard to certifying the usage for system
integrity.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Many years ago, I designed some vacuum
chambers that had to have a 150PSI pressure rating as a
process safety, and we used knife-edge flanges on the
chamber. The knife-edge flanges were then certified as
part of the pressure vessel rating on the entire vacuum
chamber. The application I have now is strictly flange
related, they're not part of a larger system.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><br clear="all">
<o:p></o:p></p>
<div>
<div>
<p class="MsoNormal">DennisSchweiger<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">University of Michigan/LNF<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">734.647.2055 Ofc<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
<br>
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