DWDFXAN Hydraulic Cartridge DWDF-MAN DWDFXAN224 Direct-acting Solenoid-operated Directional Poppet Valve

1. Attributes
Structural type: Conical valve core type solenoid directional valve
Pressure rating: Maximum pressure resistance up to 350bar (5000psi)
Flow capacity: The flow range covers 15-120 GPM (60-480 L/min), suitable for hydraulic circuits with different flow requirements
Compatible interface: Complies with standard socket specifications and supports the installation of integrated valve groups
Compatible medium: Mainly petroleum-based hydraulic oil, combined with corresponding sealing rings, it can be adapted to various hydraulic medium working conditions
2. Characteristics
Excellent sealing and pressure-bearing performance: It adopts a conical valve core structure design with extremely low leakage, less than 10 drops per minute, ensuring good sealing performance under load holding conditions. With a high-pressure adaptability of 350bar, it can stably withstand the instantaneous pressure shock of the hydraulic system and is suitable for high-pressure working conditions.
Strong installation adaptability: The valve tail end adopts a free-floating structure. The internal working parts that fit closely can float within the valve body. This not only reduces the sensitivity to installation torque but also prevents internal moving components from being stuck due to installation deviations, minimizing the impact of installation errors on the valve body.
Flexible adaptability: Compatible with multiple working voltages such as DC24V and AC220V, it can meet the power supply requirements of different control systems. At the same time, it supports integrated valve group design, which can save installation space and weight of the hydraulic system.
Function and role
The core is used for the direction control of the oil circuit in the hydraulic system, achieving the start, stop and movement direction switching of the hydraulic actuator. For instance, it can control the extension and retraction of the hydraulic cylinder, the forward and reverse rotation of the hydraulic motor, and other actions, thereby ensuring that each actuator of the equipment operates precisely according to the preset program. Meanwhile, its stable sealing performance can reduce hydraulic energy loss, ensure the stability of system pressure, and enhance the overall operational efficiency of the hydraulic system.
3. Principle
The essence relies on the coordination of electromagnetic signals and mechanical structures to achieve the reversing of the oil circuit. When powered on, the coil generates a magnetic field that drives the internal actuating components to act, causing the cone valve core to move and change the connection path of the oil circuit, allowing the hydraulic oil to flow into different oil circuit channels and pushing the actuating elements to perform corresponding actions. When power is cut off, the valve core returns to its initial position under the action of the reset structure, and the oil circuit regains its initial connected state. In case of circuit faults, some configurations can be manually operated to assist in switching the valve core position, ensuring the temporary controllability of the oil circuit.
4. Operation precautions
When installing, it is necessary to ensure that the valve body is clean and free of impurities. The hydraulic oil should be filtered in advance to prevent impurities from entering the gap between the valve core and the valve sleeve, which may cause the valve core to get stuck or worn, affecting the reversing accuracy.
The coil voltage of the corresponding specification should be matched to avoid burning out the coil due to excessively high voltage or causing slow commutation response due to excessively low voltage. Before starting up after a long period of idleness, it is necessary to check the insulation of the coil and the stability of the wiring.
Avoid operating at excessive flow or pressure, as this will accelerate the wear of the cone valve core, increase leakage, and in severe cases, may damage the sealing structure inside the valve body and shorten its service life.
Regularly check the condition of the sealing ring. If it is in a damp, dusty or corrosive environment, shorten the inspection cycle. Replace it in time if aging or damage is found to prevent medium leakage.
5. Model of use
Construction machinery category: 15-25 ton excavators and loaders, used to control the oil circuit switching of the boom, bucket arm and bucket, ensuring flexible switching between excavation and loading/unloading actions.
Industrial forming equipment category: Medium-sized injection molding machines, die-casting machines, suitable for oil circuit control of mechanisms such as molds and ejection, ensuring the continuity of actions in the forming process;
Lifting and transportation equipment category: 5-10 ton class gantry cranes and cantilever cranes, used for oil circuit control of luffing mechanisms to achieve smooth lifting and lowering of the boom.
Machine tool equipment category: CNC lathes, machining centers, oil circuit reversing compatible with hydraulic tool turrets and hydraulic fixtures, ensuring the accuracy of tool changing and workpiece clamping.
6. Series Model recommendations
The following models have similar functional features to DWDF-XAN and are highly compatible with the same scenarios. They can be used as alternatives or as matching options:
Ddf-mcn-224: Also a conical valve core solenoid directional valve, it has a low leakage rate and is suitable for high-frequency reversing conditions. It is ideal for machine tool hydraulic systems with high requirements for action accuracy.
DTAF-MHN-224: The flow capacity is matched with the pressure rating and DWDF-XAN, supports manual emergency operation, and is suitable for emergency working conditions of construction machinery.
RBAP-MAN-224: It has strong voltage adaptability, interchangeable coils, and consistent installation methods, making it suitable for hydraulic equipment that requires flexible adaptation to different power supply systems.
DTDA-MHN-224: It features a fast reversing response speed and is suitable for hydraulic circuits of injection molding machines, stamping machines and other equipment with high requirements for action rhythm.

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