4WEH25-5X/6X/7X Solenoid Directional Control Valve

4WEH25-5X/6X/7X Solenoid Directional Control Valve

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 3 year year

Product details

1. Model Breakdown

4WEH25-5X/6X/7Xis a standard hydraulic solenoid directional control valve from Bosch Rexroth or similar manufacturers. The model code is interpreted as follows:

• 4: Indicates4 ports(P, T, A, B), meaning it is a3-position, 4-way valve.

• WE: Stands forWet Electromagnetic Valve, where the solenoid is immersed in hydraulic oil for better dust and water resistance.

• H: RepresentsHigh Pressure, suitable for high-pressure hydraulic systems.

• 25: Nominal bore size of25 mm, corresponding to a rated flow rate (e.g., 160 L/min; refer to manual for exact values).

• 5X/6X/7X:

• 5X: Typically denotesspring-centered(returns to neutral position via springs).

• 6X: May indicatehydraulic-centeredor other control methods (e.g., electro-hydraulic).

• 7X: Could represent special neutral functions (e.g., H-type, Y-type) or position feedback.

2. Key Features

• 3-Position, 4-Way Design:

• Three operating positions (left, neutral, right) and four ports (P-inlet, T-tank, A/B-working ports).

• Controls start, stop, and direction reversal of hydraulic cylinders or motors via solenoid activation.

• Wet Solenoid:

• Immersed in hydraulic oil for efficient cooling and long service life, ideal for high-frequency switching.

• High dust/water resistance (e.g., IP65/IP67) for harsh environments.

• High-Pressure Capability:

• Rated pressure up to350 bar (5,075 psi), with higher peak pressure.

• Suitable for construction machinery, die-casting machines, and other high-pressure systems.

• Neutral Position Options:

• 5X (Spring-Centered): Ports A/B may be blocked or connected to T in neutral (e.g., O-type, M-type).

• 6X/7X: May include H-type (A/B connected to T in neutral) or Y-type (A/B to T with P blocked); confirm based on exact model.

3. Technical Specifications (Typical Values)

【表格】

Parameter Description

Bore Size 25 mm

Rated Flow 160 L/min (refer to manual for exact values)

Rated Pressure 350 bar (5,075 psi)

Peak Pressure 420 bar (6,090 psi)

Control Method Solenoid-operated (single/double solenoid)

Voltage DC 12V/24V, AC 110V/220V (optional)

Response Time ≤50 ms (energizing/de-energizing)

Ambient Temp. -40°C to +60°C

Protection IP65/IP67 (dust/waterproof)

4. Applications

• Construction Machinery: Hydraulic cylinder/motor control in excavators, loaders, and cranes.

• Industrial Hydraulics: Presses, die-casting machines, and metal forming equipment.

• Agricultural Machinery: Tractors and combine harvesters.

• Marine & Offshore: Deck machinery and steering gear systems.

5. Selection Considerations

• Neutral Function: Choose O-type (blocked), H-type (relieved), or Y-type (pressure-holding) based on system requirements.

• Voltage Compatibility: Ensure solenoid voltage matches the control system (DC 24V is common).

• Flow/Pressure Ratings: Verify rated flow and pressure meet system demands.

• Mounting Style: Subplate or flange mounting options.

6. Example Symbol (Spring-Centered 5X)

3-Position, 4-Way Valve Symbol: P ──┬── A │

T ──┼── B │ (Neutral: A/B blocked or connected to T)

7. Common Issues & Solutions

• Stuck Spool: Caused by contaminated oil or solenoid failure; requires oil replacement and cleaning.

• Slow Response: Check voltage stability or solenoid coil aging.

• Oil Leakage: Inspect seal wear or loose mounting bolts.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

3 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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