The 4WE10D-L3X/OFCG220NZ5L solenoid valve is a critical control component in industrial automation and hydraulic systems. It is used to control the on-off status or direction switching of fluids such as hydraulic oil, featuring precise control and fast response.
Installation Notes for 4WE10D-L3X/OFCG220NZ5L Solenoid Valve
- Verify and check parameter consistency carefully before installation.
- Flush pipelines under pressure to remove contaminants prior to pipe connection.
- Pay attention to medium cleanliness; install a filter valve if necessary.
- Do not mount the valve at pipeline low points or outlets from the bottom of vessels.
The 4WE10D-L3X/OFCG220NZ5L is a pilot-operated solenoid directional valve with stable performance and wide application. It is suitable for medium-flow hydraulic systems requiring high control accuracy and rapid response.
1. Electromagnetic Driving Principle of 4WE10D-L3X/OFCG220NZ5L Solenoid Directional Valve
The core driving force of the solenoid directional valve comes from the electromagnetic attraction generated by the solenoid. When the control system sends a power-on command to the coil, a magnetic field forms inside the solenoid, which creates electromagnetic attraction on the armature. This electromagnetic force acts directly on the spool via a push rod, overcoming the spring force of the return spring and driving the spool axially from its rest position to the target end position.
This model adopts a wet solenoid design, where the coil operates immersed in hydraulic oil. It delivers good heat dissipation and stable electromagnetic force output. When energized, the solenoid force drives the spool from the neutral position to the required working position. At this point, pressurized hydraulic oil flows from port P to port A, and port B connects to port T, or vice versa, so as to switch the direction of hydraulic flow.
2. Spring Return Mechanism of 4WE10D-L3X/OFCG220NZ5L Solenoid Directional Valve
Electromagnetic force is responsible for “pushing”, while spring force handles “pulling back”. Once the solenoid is de-energized, electromagnetic attraction disappears instantly. The elastic force of the return spring then pushes the spool back to the neutral or initial position, and the oil circuit returns to its normal state. This combined “electromagnetic force + spring force” design ensures fast and reliable spool switching between two working positions.
This de-energized reset characteristic is particularly important for turbine protection systems. If the control system loses power, the solenoid valve automatically returns to the safe position to maintain or cut off the oil circuit and guarantee unit safety.
3. Technical Parameters and Selection Guide of 4WE10D-L3X/OFCG220NZ5L Solenoid Directional Valve
This valve is used for oil circuit switching of emergency trip modules and serves as a pilot control valve for electro-hydraulic directional valves. The nominal size of this model is 10 mm, with a maximum working pressure of 315 bar and a maximum flow rate of 120 L/min. It is powered by 220V AC supply. In turbine hydraulic systems, this type of solenoid directional valve is commonly used to control the oil supply direction of actuators.
Selection considerations: The magnitude of electromagnetic force is directly related to coil voltage, current and magnetic circuit structure. Excessive voltage fluctuation will affect electromagnetic force output and may result in incomplete spool shifting. It is recommended to keep the supply voltage stable within ±10% of the rated value.
DFYLSYC-2026-09-18-A
