While tripping merrily through the mail, Alexander Bilan was overheard
 AB> Theres a thought. Semi's come with air reserve tanks as well. But the
 AB> big question is, whats the operating pressure of these systems?
Every system I've worked with was around 100-PSI.  There was generally a
pressure switch that would not let you release the brakes until you had at
least 60 PSI, and the relief valve was around 120.
I don't know what you want the air for, but most commercial compresors
are right around this same value.
Don
... Who is General Failure and why is he reading my disc?
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