Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of we10 series solenoid directional control valve in China, also supports customized service. If you're going to wholesale high quality we10 series solenoid directional control valve made in China, welcome to get pricelist from our factory.
Product introduction
The WE10 series solenoid directional control valve is a directional control valve that uses electrical solenoids to shift the internal spool, directing hydraulic oil to different ports in the circuit. It is built on the standard NG10 mounting interface, which is larger than the NG6 size commonly used for pilot circuits. The NG10 size provides larger internal passages, which reduces pressure loss at higher flow rates.
The WE10 series is rated for a maximum working pressure of 35 MPa (350 bar) at the P/A/B ports. The T port is rated for a back-pressure of 21 MPa. The valve can handle a maximum flow of 120 L/min, which makes it suitable for main circuit control in medium-to-large hydraulic systems.
The WE10 is available with multiple spool functions: E, J, H, G, D, and Y. These suffixes define the flow path when the spool is centered. Depending on the selected function, the cylinder ports may be blocked, open to tank, or interconnected. The correct function is selected based on the circuit diagram.
Coil options
The series is available with DC coils (12V and 24V) and AC coils (110V and 220V). DC coils are used in mobile equipment running on batteries or 24V vehicle networks. AC coils are used in stationary industrial machinery connected to mains power. The voltage rating is marked on each coil housing.
Operation
Shifting the spool with two coils
The WE10 has a solenoid coil on each end of the valve body. When the left coil is energized, the spool shifts to direct flow to the A port. When the right coil is energized, the spool shifts to direct flow to the B port. When both coils are de-energized, the spool returns to neutral.
Spring-centered vs. detented
The valve is available with spring-centered and detented spool configurations. Spring-centered spools return to neutral when the electrical signal is removed. This is the standard choice for most applications, as it ensures the cylinder returns to a safe position if power is lost. Detented spools hold the last commanded position. The correct choice depends on whether the circuit requires the cylinder to hold its position or return to neutral.
Terminal housing
The electrical connections are covered by a transparent housing that allows for visual inspection. The wiring should be routed away from moving machine parts and heat sources.
The Specifications
| Parameter | Specification | What It Means on the Machine |
|---|---|---|
| Valve Size | NG10 | The valve uses the NG10 mounting interface. |
| Max. Operating Pressure (P/A/B) | 35 MPa (350 bar) | The maximum pressure the valve can handle at the pressure inlet and work ports. Running the valve above 35 MPa may cause internal leakage or structural damage. |
| Max. Operating Pressure (T Port) | 21 MPa | The maximum back-pressure allowed on the tank return port. If the return line back-pressure is higher than this, spool shifting performance may be affected. |
| Max. Flow | 120 L/min | The maximum flow rate the valve can handle efficiently. The NG10 size allows this flow with a lower pressure drop than smaller valves. |
| Working Voltage (DC) | 12V / 24V | DC coils are used in mobile equipment powered by batteries or a 24V vehicle network. Choose the voltage that matches your system. |
| Working Voltage (AC) | 110V / 220V | AC coils are used in stationary industrial machinery connected to mains power. Mismatched voltage will cause the coil to overheat or burn out. |
How To Order
1. Send Your Requirements
Provide the application, required flow rate, pressure, number of sections, control method, and quantity.
2. Model Selection
Our technical team recommends a suitable valve configuration based on your hydraulic system.
3. Quotation and Confirmation
Specifications, quantity, delivery requirements, and commercial terms are confirmed.
4. Production and Testing
The valves are manufactured and tested before shipment.
5. Delivery and Technical Support
Shipping arrangements and after-sales technical support are provided according to project requirements.
Quality Control
Dimensional inspection
After machining, the valve bodies and spools are inspected for dimensional accuracy. The spool-to-bore clearances are verified to ensure they fall within the specified tolerance range. Parts that do not meet the dimensional requirements are removed from the production line.
Full testing
Every assembled valve is pressurized to the rated 35 MPa on a hydraulic test bench. This test confirms that the valve body, port faces, and O-ring seals can hold the rated pressure without external leakage. Valves that show any sign of leakage during this test are reworked before packing.
Leakage inspection
In addition to the external pressure test, we measure the internal leakage across the spool at the specified test condition. This ensures that the cylinder drift remains within acceptable limits when the spool is in the neutral position.
Final visual inspection
Before packaging, each valve is visually inspected for any surface imperfections, correct labeling, and proper port protection. Only valves that pass all checks are released for shipment.
From Production to Delivery
1. Casting and body preparation
The valve bodies start as iron castings. Each casting is inspected for cracks, porosity, and surface defects before it enters the machining line. Castings that do not pass the visual inspection are rejected at this stage.
2. CNC machining
The approved bodies are transferred to CNC machining centers. The port faces, mounting surfaces, and spool bores are machined to the specified tolerances. After machining, the parts are cleaned to remove coolant and metal chips.
3. Spool production
The spools are turned and ground from solid steel bar stock to a precise surface finish. The final diameter is controlled closely to match the machined bore in the valve body. Each spool is matched to its corresponding bore during the sizing stage.
4. Coil testing and preparation
The solenoid coils are tested for electrical resistance and insulation integrity before they are assembled onto the valve body. Coils that fail the electrical tests are removed from the production line.
5. Assembly
The valve bodies, spools, springs, and solenoid coils are assembled. O-rings are seated at the mounting interface. The terminal housing is fitted to the coils.
6. Bench testing
Every assembled valve is tested on a hydraulic test bench. The valve is pressurized to 35 MPa to verify seal integrity and leak-free operation at the port faces. The solenoid is energized at the rated voltage to confirm that the spool shifts fully and returns to neutral reliably.
7. Packaging
After passing the test, the ports are sealed with protective plugs. The valve is wrapped and labeled with the model number and voltage specification. The valves are packed in export-grade wooden crates or heavy-duty cartons depending on the order size.
8. Ready for shipment
The finished valves are staged for shipping. Installation and adjustment instructions are included with each shipment.
FAQ
Q: What is the WE10 series, and what is it used for?
A: The WE10 series is a solenoid-operated directional control valve that uses electrical signals to shift an internal spool, directing hydraulic oil to different parts of a circuit. It is most commonly used as a main directional control valve in industrial hydraulic power units, mobile excavators, and high-flow test benches, where reliable electrical actuation is required.
Q: What are the key performance specifications of the WE10 series?
A: The WE10 series is available in the NG10 mounting size. It handles a maximum flow of 120 L/min and operates at a working pressure of 35 MPa (350 bar) at the P/A/B ports. The T port (tank return) is rated for a back-pressure of 21 MPa. The valve is available with DC coils (12V and 24V) and AC coils (110V and 220V).
Q: Can this valve be customized for my specific application?
A: Yes. We support OEM requests for specific spool functions, special coil voltage requirements, and other customizations. If your application requires a configuration not listed in the standard table, send your drawing or circuit schematic to our engineering team. We can verify the compatibility before production begins.
Q: What should I check when installing the WE10 series valve?
A: Before installation, confirm that your manifold is designed for the NG10 mounting pattern. The NG10 is not interchangeable with smaller NG6 manifolds. Also, verify that the spool function (E, J, H, G, D, or Y) matches your circuit diagram. Installing the wrong spool function can cause the cylinder to drift or move unexpectedly. Finally, check the coil voltage rating before wiring-a 12V DC coil on a 24V DC system will overheat rapidly.
Q: How should I maintain the WE10 series for long-term reliability?
A: The WE10 series does not require routine disassembly or maintenance as long as the hydraulic oil is kept clean. The spool-to-bore clearance is tight, and contaminated oil can cause the spool to stick. We recommend maintaining oil filtration at 25 microns or better and checking the oil condition at regular intervals. If the valve starts to shift sluggishly, the first step is to change the oil filter and inspect the fluid.
Q: Do you provide technical support during installation and operation?
A: Yes. We provide full technical support for installation, adjustment, and troubleshooting. If you have questions about circuit integration, spool function selection, or electrical wiring, our engineering team is available to assist. We can also provide guidance on system design and component compatibility.
Q: Can the WE10 series be used in a closed-center hydraulic system?
A: Yes, the WE10 series can be used in closed-center systems. The valve operates independently of the circuit type. However, in closed-center systems, the pressure is held in the main line when the spool is centered. Make sure that the system pressure does not exceed the valve's 35 MPa rating.
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