DG4V Series: This indicates that the valve belongs to the Vickers DG4V series, which is widely used in hydraulic systems for directional control purposes.
Double-headed and Single-headed Solenoid Valves: This valve may come with either a single solenoid (single-headed) or two solenoids (double-headed). The presence of one or two solenoids allows for different control configurations. A single-headed solenoid valve is often used for simple on/off or unidirectional control, while a double-headed solenoid valve can provide more complex directional control, such as switching the flow direction between two different paths.
