Operation Air Line Color Chart Eaton® Fuller® 5/32" air lines are color coded for easy identification. Use the follow chart along with the appropriate system schematic when troubleshooting and repairing your air system. Nomenclature
Color
S- Supply
Red
P-Pilot
Black
H/L- Splitter or Deep reduction
Green
A- Supply, Non-regulated
Orange
SP- Splitter pilot
Blue
B- Brake signal
Yellow
E-Exhaust
Brown
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