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Red vs Orange, are you referring to the color of the unit or the color of the relief valve? Being such an old model, the color has faded but if I had to decide, the unit would have been red. Newby here.

I bought on older MCH 6 compressor and there are no identifiers as to which model it is, what the cfm is and the max psi it compresses to. The stamp on the block is 400795. Any help?

Hello every one, I' am new here and have some questions that I'll need answered at a very basic level. So hopefully you'll all be patient with me please. I have purchased a used coltri compressor that is older but functioning. Seller said it was a couple years old when he bought it in 2006...