pneumatics: 3/2-, 4/2- and 5/2-port directional control valves all directional control valves and graphical symbols can be moved function and description of the different valves the model facilitates the understanding of symbols by comparison with real valves description ordernumber 217 see also: pneumatics: decision elements AND – OR – NOT hydraulics: directional control valve (connection diagram and drawing) radial-piston pump angles on the tool lip