I was into a Amish window factory the other day and their air lines
caught my eye. They used 3" PVC pipe for all their air lines
suspended from the ceiling with supports and T's with snap couplers at
all the work stations. They used brass gas line couplers for shut
offs for the various branches. A 8" pressure gauge noted 145# PSI at
the end of the line. What are the Plusses for this type of system
other than the line acting as a storage media? I didn't see any water
separators and was wondering if they were using a engine driven
compressor in the cold and drawing cold air into the compressor and
bringing it in a warm shop what effect this type of line would have?