Copyright Goodheart-Willcox Co., Inc. 404 Fluid Power Fixed air-distribution systems are often unique to a building. However, the objective of any design is a system that can effectively deliver compressed air as needed by a workstation. In addition, a well-designed, fi xed system needs to have the capability to handle a reasonable increased load or equipment relocation without major modifi cations. on the loop can receive air from either leg of the loop. This dual-line concept signifi cantly reduces fl ow resis- tance, providing compressed air to any workstation on the loop with minimal pressure loss. Several compres- sors can be located at points around the loop system to provide increased airfl ow while maintaining minimal pressure drop caused by higher airfl ow rates. Compressor station #1 Compressor station #2 Compressor station #3 Separate grids Goodheart-Willcox Publisher Figure 16-9. A decentralized grid uses a number of compressor stations each with a smaller, independent distribution grid. Compressor station Looped main line Goodheart-Willcox Publisher Figure 16-10. A loop distribution system provides a main distribution line that forms a continuous loop. This arrangement allows the distributed air to travel to an operating workstation following two possible routes rather than a single line.