Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of 4we6 solenoid directional valve for automated hydraulic circuits in China, also supports customized service. If you're going to wholesale high quality 4we6 solenoid directional valve for automated hydraulic circuits made in China, welcome to get pricelist from our factory.
1. Product Background
Not every hydraulic circuit is controlled by hand.
Manual sectional valves work well when an operator is standing at the machine. But when the circuit needs to be controlled by a PLC, a timer, or a signal from another part of the system, a manual lever is not enough.
The 4WE6 Solenoid Directional Valve for Automated Hydraulic Circuits is built for that situation. It shifts the spool by electrical signal, not by hand. The rest of the circuit stays the same. What changes is how the valve is commanded.
Design Trade-off
The 4WE6 is available with multiple spool types. Each type gives a different flow path in the neutral position and during shifting.
Which one you need depends on what the circuit should do when the solenoid is de-energized. Some circuits need the actuator to hold position. Some need it to return. Some need the pump to unload. The spool type decides that behavior.
If you are not sure which spool type fits your circuit, send us your hydraulic schematic. We can confirm the model code and provide OEM service with your drawing and specifications.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 4WE6 |
| Valve type | Solenoid directional valve |
| Max working pressure P/A/B | 35 MPa |
| Max working pressure T | 21 MPa |
| Max flow | 80 L/min |
| Working voltage DC | 12V / 24V |
| Working voltage AC | 110V / 220V |
| Spool types | Multiple options available |
| Brand | Onederful Hydraulic or OEM/ODM |
In Practice
The 4WE6 Solenoid Directional Valve for Automated Hydraulic Circuits is usually controlled by one of three signal sources:
PLC output. The valve shifts when the PLC sends a signal. Common in automated production equipment.
Manual switch or button. The operator presses a button, the solenoid energizes, the valve shifts.
Timer or sequence controller. The valve shifts according to a preset sequence, without operator input.
In each case, the valve does the same job: convert an electrical signal into a hydraulic flow path change. The difference is where the signal comes from.
Difference from Manual Valves
| Item | Manual valve | Solenoid valve (4WE6) |
|---|---|---|
| Control method | Manual lever | Electrical signal |
| Typical use | Mobile equipment with operator | Automated or remote-controlled circuits |
| Voltage required | None | DC 12/24V or AC 110/220V |
| Spool shifting | By hand | By solenoid |
The two product types are not substitutes. They serve different control needs. A machine can use both: manual valves for some functions, solenoid valves for others.
Procurement Notes
Voltage selection.
Confirm the control voltage before ordering. DC 12/24V and AC 110/220V are both available, but the valve must match the power supply in the system.
Spool type.
The model code includes the spool type. If you are not sure which one fits, send us the schematic.
OEM/ODM.
The 4WE6 is available under the Onederful brand or as OEM/ODM. If you need your own brand or specific markings, tell us before ordering.
Lead time.
Most orders without stock take 10 to 14 business days. If stock is available, 2 to 3 business days.
Warranty.
12 months against B/L date.
Production Process
Raw Material Inspection
High-strength cast iron and alloy steel are checked for composition and mechanical properties before anything else happens.
Precision Machining
CNC equipment handles milling, drilling, grinding, and honing to hold tight tolerances on bodies, spools, and end covers. After machining, all parts go through deburring, cleaning, and dimensional verification. For explosion-proof valves, the flame path surfaces are machined to precise gap tolerances.
Heat Treatment
Key components such as spools and valve seats undergo hardening to improve wear resistance and extend service life.
Surface Treatment
Phosphating or other rust-proof coatings are applied to protect against corrosion and improve surface durability.
Assembly
Skilled workers install spools, springs, seals, and control parts in sequence, with torque control on each connection. The flameproof enclosure is assembled with care to maintain the specified gap clearances.
Pressure Testing
Every assembled valve goes through hydraulic testing-pressure resistance, leakage detection, and functional debugging under rated working pressure.
Final Inspection
Visual inspection, dimensional confirmation, and test data review. Each valve is individually tested, not spot-checked, with test data filed against its serial number for full traceability.
FAQ
Q: Is the 4WE6 Solenoid Directional Valve for Automated Hydraulic Circuits a normally closed or normally open valve?
A: That depends on the spool type you order. The 4WE6 is available with multiple spool options, and the neutral position flow path differs between them. Tell us what the circuit should do when the solenoid is de-energized, and we will match the spool type.
Q: Can the 4WE6 be used in a circuit with a manual valve?
A: Yes. The two are not substitutes. A machine can use manual valves for some functions and solenoid valves for others. The choice depends on whether the function is controlled by an operator or by a signal.
Q: How is the valve mounted?
A: The 4WE6 uses a standard subplate mounting pattern. It is installed on a manifold or subplate, with the P, T, A and B ports connected through the mounting surface. No pipe connections are made directly to the valve body.
Q: Does the valve need a return line?
A: Yes. The T port must be connected to tank. Without a return path, the spool cannot shift properly and pressure can build up inside the valve.
Q: How often does the solenoid need to be replaced?
A: The solenoid coil is not a routine wear part. Under normal operating conditions, it lasts for the life of the valve. If a coil fails, it is usually due to voltage mismatch or overheating, not normal wear.
Q: Can the valve be repaired on site?
A: In most cases, the valve is replaced rather than repaired on site. The spool and body are matched during manufacturing. If a problem occurs, contact us with the model code and the operating conditions.
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