[labnetwork] CDA and copper piping

[Paolini, Steven]

Kevin,
  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.
In any event, do NOT use PVC!!!!! When PVC is overpressurized, it explodes in shards!
  Equipment Dood.

Steve Paolini
Principal Equipment Engineer
Harvard University Center for Nanoscale Systems
11 Oxford St.
Cambridge, MA 02138
617- 496- 9816
spaolini at cns.fas.harvard.edu
www.cns.fas.harvard.edu

From: labnetwork <labnetwork-bounces at mtl.mit.edu> On Behalf Of Denis, Kevin L. (GSFC-5530)
Sent: Wednesday, December 07, 2022 4:46 PM
To: labnetwork at mtl.mit.edu
Subject: [labnetwork] CDA and copper piping

Hello All,
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.


Regards,
Kevin


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