What is the function of 4WE10 solenoid reversing valve

4WE10 solenoid reversing valve is a solenoid-operated reversing valve, which is mainly used to control the opening, stop and reversing of liquid flow in the hydraulic system, and realize the movement control of hydraulic components or the flow direction adjustment. Its core role and working principle are as follows:

1. Core role

Direction control

By turning on and off the solenoid, the valve core position is changed, thereby switching the flow path of hydraulic oil (such as P→A, B→T or P→B, A→T), and realizing the forward and reverse rotation or direction switching of actuators (such as hydraulic cylinders, hydraulic motors).

Flow regulation

In some applications, by adjusting the valve core opening or matching the throttle valve, the flow rate of the hydraulic oil can be controlled, thereby adjusting the movement speed of the actuator.

System protection

When the hydraulic system is overloaded or malfunctioned, the oil circuit can be cut off through the reversing valve to protect the safety of the equipment.

2. Working principle

Structural composition

The 4WE10 solenoid reversing valve is mainly composed of the main valve body, valve core, return spring, solenoid (pilot valve) and other parts. The valve core can be a slide valve type. Through the solenoid attachment and release, the valve core is driven to slide in the valve body and change the oil circuit connection.

Action process

Power-on state: The solenoid is energized, and an electromagnetic force is generated to push the valve core to move, overcome the resistance of the return spring, make the valve core reach its working position, and change the oil circuit connection.

Power-off status: The solenoid loses power, the reset spring pushes the valve core back to its initial position, and restores the original oil circuit connection.

Intermediate position: Some models of valve cores are in the intermediate position when power is off, which can achieve oil circuit closure or specific functions (such as unloading).

Pilot control (some models)

High-end models (such as 4WEH series) use pilot solenoid valves to control the reversal of the main valve, and use small flow pilot oil to push the main valve core to move, realizing the reversal of large flow hydraulic oil, and improving control accuracy and response speed.

3. Technical characteristics

High reliability

The valve core and valve body have high matching accuracy, good sealing, easy to control internal leakage, and blocked external leakage. It is suitable for corrosive, toxic or high-temperature media.

Flexible control

It can be equipped with wet AC or DC solenoids, which support manual emergency operation, separate or centralized connection of electrical wiring to meet different working conditions.

Modular design

Some models integrate pilot valves, manual valves and throttle valves to simplify the system structure and reduce installation and maintenance costs.

Strong adaptability

It has a wide diameter range (such as NG10), high pressure level (to 35MPa), and a large flow rate (up to 1100L/min). It is suitable for heavy-load scenarios such as ships, injection molding machines, and construction machinery.

4. Typical application scenarios

Industrial automation

In CNC machine tools and stamping equipment, the expansion and contraction direction of the hydraulic cylinder is controlled to realize the clamping, positioning or stamping of the workpiece.

Engineering machinery

In excavators and loaders, the forward and reverse rotation of the hydraulic motor is controlled and the walking or slewing mechanism is driven.

Marine hydraulic system

Control the hydraulic oil circuit direction of servo, anchor and other equipment to realize ship control or anchoring operations.

Injection molding

In the injection molding machine, the opening and closing of the mold, the movement of the ejection mechanism, and the advancement and return of the injection cylinder are controlled.