- Porting pattern to DIN 24 340 form A, ISO 4401 and CETOP-RP 121 H
- Wet pin DC or AC solenoids with removable coil
- Solenoid coil can be rotated through 90°
- No need to drain oil when replacing the coil
- Fault override button available as an option
- Waterproof pin plug available as an option
- Wide voltage range available as an option
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Type WE valves are solenoid-operated directional spool valves. They are used to control the start, stop, and direction of fluid flow in hydraulic systems.
The directional control valves consist of a housing (1), one or two solenoids (2), a control spool (3), and one or two return springs (4).
In the de-energized state, the control spool (3) is held in the neutral or initial position by the return springs (4), except for impulse spools. The control spool (3) is actuated via wet pin solenoids (2).
To ensure proper operation, it is important to make sure that the solenoid pressure chamber is filled with oil.
The control spool (3) moves to the desired position under the influence of the solenoid (2) and push rod (5), allowing free flow from P to A and B to T, or from P to B and A to T.
When the solenoid (2) is de-energized, the control spool (3) returns to its original position due to the return springs (4).
Solenoids can also control the control spool (3) using an optional override button (6) in the de-energized condition.
There are different versions available, such as Type 4WE 6.. L6X/O... (only applicable for symbols A, C, and D), which features two switching positions and two solenoids without detent.
Type 4WE 6.. L6X/OF... (impulse spool, only for symbols A, C, and D) includes two switching positions, two solenoids, and a detent, ensuring that both positions are fixed alternately, so the solenoid doesn’t need to be continuously energized.
A cartridge throttle (type 4WE 6..L6X/¡-/B..) may be required if the actual flow exceeds the valve's performance limits during switching. It is typically installed in the P channel of the directional control valve.
For applications involving voltage fluctuations, solenoids with a wide voltage range are recommended.
For use in high protection environments, a waterproof plug should be used.