Engineering Fluid Diagrams and Prints
FLUID POWER P&IDs
With an understanding of the principles involved in reading fluid power diagram, any diagram
can be interpreted. Figure 29 shows the kind of diagram that is likely to be encountered in the
engineering field. To read this diagram, a step-by-step interpretation of what is happening in the
system will be presented.
Figure 29 Typical Fluid Power Diagram
The first step is to get an overall view of what is happening. The arrows between A and B in
the lower right-hand corner of the figure indicate that the system is designed to press or clamp
some type of part between two sections of the machine. Hydraulic systems are often used in
press work or other applications where the work piece must be held in place.