Throughout our discussion of industrial
hydraulics, operational cross sections and circuit drawings
use the color codes in the legend below. The color key is not applicable
when color is used solely to enhance the graphics.
- Tank Return Flow (Tank Passage)
- Intake Flow To Pump Or Drain Line Flow
- Inlet Pressure Or The Highest Of All Possible Working Pressures
- Intermediate Pressure (Shades Of Orange May Be Used To Indicate
Different Pressure Levels)
- Controlled Flow By Some Type Of Metering Device Or The Lowest
Of All Working Pressure
- Inactive Hydraulic Fluid
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