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<p class="MsoNormal">Kevin,<o:p></o:p></p>
<p class="MsoNormal"> Copper is OK for CDA use but I would recommend having the joints brazed while a purge gas (argon) is flowing. Traditional soldering leaves flux residue that could migrate downstream. The new style “Propress” fittings are quite good and
very clean as well.<o:p></o:p></p>
<p class="MsoNormal">In any event, do NOT use PVC!!!!! When PVC is overpressurized, it explodes in shards!<o:p></o:p></p>
<p class="MsoNormal"> Equipment Dood.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:14.0pt">Steve Paolini<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">Principal Equipment Engineer<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">Harvard University Center for Nanoscale Systems<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">11 Oxford St.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">Cambridge, MA 02138<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">617- 496- 9816<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">spaolini@cns.fas.harvard.edu<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">www.cns.fas.harvard.edu</span><span style="font-size:14.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> labnetwork <labnetwork-bounces@mtl.mit.edu> <b>
On Behalf Of </b>Denis, Kevin L. (GSFC-5530)<br>
<b>Sent:</b> Wednesday, December 07, 2022 4:46 PM<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] CDA and copper piping<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hello All,<o:p></o:p></p>
<p class="MsoNormal">Has anyone used copper piping for clean dry air lines. If not what kind of problems would one run into if going this route? Thanks for any insight that can be provided.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<br>
Kevin<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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