What units are you working in? What application? Is it control lines, workshop, plant air, or larger volumes? What pressures are you using? This affects piping and details.<br>
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Do you have a piping flow design program, or are you looking for a table such as you would find in a text book? Data books used to be published by compressor vendors many years ago. These are still available in libraries and contain data which is still valid.<br>
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Alternatively you can write your own spreadsheet for doing the calculation. There should be a pipe flow design program available on the Net, but I dont have the site address.