Friday 30 July 2010

Directional Control Valves

The directional control valve is represented by the number of controlled connections, the number of positions and the flow path. In order to avoid faulty connections, all the inputs and outputs of a valve are identified.



A numbering system is used to designate directional control valves and is in accordance with DIN ISO 5599-3. Prior to this a lettering system was utilised and both systems of designation are presented here:

working lines



Pilot lines

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