Above you can see the various operating methods of a control unit. Also interesting is, that the initial position of such a controller can be determined. The remaining symbols are shown below. This does not mean that they are less significant, or indeed, that they are all listed. We have limited ouselves to those which, in our opinion, are the most important.
We will end our explanation of the list of symbols, essential for almost all hydraulic components, with the pressure-limiter or pressure regulation valve. It should now be possible to depict the equipment shown in Hydraulics 2 completely in symbolic form ... 05/12