Depending on the requirements placed on the switching characteristics of a valve (e.g. to prevent switching shocks), the switching speed for the intended actuation element must be slowed down. This generally happens by throttling an oil volume involved in the switching process.
The influence on the switching time is generally applied for pilot-controlleddirectional valves by providing a throttle valve between the pilot valve and main valveThrottle valve, which can be used to configure the desired switching speed of the main valve (Figure S 20).
Figure S 20: Influencing the switching time of a pilot-controlled directional valve