Shijiazhuang Laiye Imort& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of single-coil solenoid operated directional control valve in China, also supports customized service. If you're going to wholesale high quality single-coil solenoid operated directional control valve made in China, welcome to get pricelist from our factory.
What You Will Notice When Installing One
The mounting interface
The solenoid coil
The concealed manual override
What This Valve Does
You need to send hydraulic oil to one side of a cylinder, then the other. Or reverse a hydraulic motor. That is directional control, and a 4/2 solenoid operated directional control valve like the 4WE10EA is built for exactly that job.
This particular variant uses a single solenoid with spring return (hence "single solenoid" or "single head"). Apply power – the solenoid pushes the spool into position, redirecting flow. Remove power – the return spring pushes it back to the original position. Two positions, four ports: P (pressure), T (tank), A and B (actuator ports). It is a simple but extremely common arrangement in industrial hydraulics.
NG10 size, direct‑acting (no pilot oil needed), wet‑pin solenoid. The valve works from zero pressure up to 350 bar. No minimum pressure requirement, which matters when you are using it in low‑pressure circuits or at the end of a cycle where pressure has dropped.
Spool Symbol EA – What "EA" Actually Means
The "EA" in the type designation refers to the spool configuration. For a single‑solenoid spring‑return valve, the symbol looks like this:
- Solenoid A energized (position 1): P → A, B → T
- Spring return (position 0): P → B, A → T
So it swaps the actuator ports. This is the standard configuration for a double‑acting cylinder: energize to extend, de‑energize to retract (or vice versa, depending on how you plumb A and B).
Some buyers accidentally order a three‑position valve (e.g., 4WE10E) with two solenoids and spring centering, then wonder why it has two coils. The 4WE10EA is explicitly a 4/2‑way valve: two positions, four ports, one coil. If you need a neutral position where all ports are blocked, you need a different spool type (e.g., 4WE10E with spring centering and two coils).
Pressure and Flow – Where It Fits
Here are the numbers you actually need:
| Parameter | Value |
|---|---|
| Nominal size | NG10 (10 mm) |
| Max operating pressure – P, A, B ports | 315–350 bar (depending on version) |
| Max operating pressure – T port | 210 bar (DC) / 160 bar (AC) |
| Max flow | 120–160 L/min |
| Weight (single solenoid) | approx. 4 kg |
The T‑port pressure limit is worth understanding. In many circuits, the tank line is near atmospheric pressure, so 210 bar is not a constraint. But if you are using the valve in a back‑pressure application (e.g., meter‑out control with a counterbalance valve downstream), the pressure at T can rise. If it exceeds the limit, the spring mechanism can be damaged or the spool may not shift reliably.
Flow capacity depends on the specific spool and pressure drop. At 120 L/min, expect a pressure drop of roughly 5–10 bar across the valve in most configurations. If you push 160 L/min, the drop increases. For most machine tool and press applications up to about 80 L/min, the valve is comfortably within its efficient range.
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