Shop Air Piping Layout Diagram - Compressor Line Sizes, Drops & Drain Points

This document is a schematic titled "Shop Air Piping Layout" showing the recommended design for a compressed air distribution system in a shop or garage. It illustrates an air compressor connected via a flexible hose and union to a main stand pipe, with the main air line sloping down and away with a recommended 4-inch drop per 50 feet (copper or galvanized pipe recommended). Main line pipe size is specified as 7/8 in. minimum and 1-1/4 in. optimum, and air hose size as 5/16 in. minimum and 3/8 in. optimum. The layout requires a minimum of 25 feet to the first outlet to cool the air (50 feet optimum), and notes the main air line stand pipe should not be smaller than the compressor outlet size. Drop legs include ball valves, unions, drain legs, and daily-drain points labeled "DRAIN DAILY." Special equipment is called out: a 707FC filter and coalescer with auto drains for the prep (paint) area, a 606A air control unit or air filter, and a DryAire desiccant system. The diagram also reminds the user to drain the air compressor daily in the morning. This is general shop equipment reference material, not specific to any vehicle.