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Old 05-30-09, 12:23 AM   #1
phantomcow2
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Copper pipe for compressed air

I'm considering installing compressed air outlets in my basement shop. I soldered this stuff at work a bunch of times, but I don't remember one important detail: is there a special type of copper pipe that must be used for compressed air? Is the home depot stuff used for water sufficient to withstand the pressures? I feel like it would be, but want to be sure. I never bought the pipe at work; it was always supplied to me.
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Old 05-30-09, 12:58 AM   #2
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We use copper pipe at work for our air. I believe its just the regular pipe, but will ask.
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Old 05-30-09, 01:08 AM   #3
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I'd use Type L for my own sanity. When I learned brazing I had to make a square with a schrader tap.

To test it I had to put it around my neck while it was pumped to 400psi.

http://answers.yahoo.com/question/in...9230132AAsG0wv

I think you'll be fine, I'd be asking about the max PSI of soldered joints.
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Old 05-30-09, 01:10 AM   #4
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Top of page 2.

http://www.olivenhain.com/docs/Engin...s/std15220.pdf
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Old 05-31-09, 12:05 AM   #5
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Copper lines work just fine for compressed air. Probably more important for home use is either an oil-free compressor or a good filter. Non-oil-free air can be a pain if you're trying to blow dust off an object with compressed air.
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