>I haven't found any PSI specs on copper either but I'm sure a local >commercial plumbing supply can tell you. I have a vertical compressor >that maxes out at 135 and the piston pump transfers the air to the tank >via a piece of 1/2" soft copper so I guess copper is okay. Let us know if >you find any specific data. > >Rob Goodale, RPT http://www.gizmology.net/pipe.htm and http://www.coppercanada.ca/publications/pub28E/28e-publicationptb6.html Ron N
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