What is the function of 4WEH16 electro-hydraulic reversing valve?

The function of the 4WEH16 electro-hydraulic reversing valve is to accurately switch the flow direction of the fluid in the hydraulic system through electromagnetic pilot control, and at the same time support stable operation under high pressure and large flow conditions. It also has a variety of optional functions to meet the needs of complex hydraulic systems. The following is a specific analysis of the effects:

Direction control and flow adaptation

As a slide valve type reversing valve controlled by the solenoid valve pilot, 4WEH16 drives the pilot valve core movement through the solenoid to control the reversing action of the main valve core. Its design can realize the functions of two-position four-way or three-position four-way, and is suitable for hydraulic systems that require frequent switching of fluid directions, such as hydraulic presses, injection molding machines, etc. The reversing action of the main valve core is driven by pilot pressure oil, which can withstand working pressure up to 35MPa and flow rate of 1100L/min, meeting the needs of high-power hydraulic equipment.

High precision and stability guarantee

Using a spring centering or hydraulic centering structure, the main valve core can automatically return to the intermediate position when there is no control signal to ensure system stability. For example, the three-position valve of the spring centering valve keeps the main valve core in the zero position through two return springs to avoid unexpected actions caused by hydraulic impact; the hydraulic centering valve uses a positioning sleeve to achieve accurate positioning, which is suitable for scenarios where high repetition accuracy is required, such as a CNC machine tool hydraulic system.

Multifunctional expansion and adaptability

This valve is available in a variety of optional configurations:

Commutation time regulator: The main valve core movement speed is controlled through the plug-in damper to adapt to the response needs of different working conditions.

Main valve stroke regulator: accurately adjust the main valve core stroke and optimize system efficiency.

Terminal position indicator/switch: Real-time feedback of the valve core position to improve automation control reliability.

Prepressure valve and pressure reducing valve: protects system components under high pressure conditions and extends service life.

These functions make it widely used in metallurgy, ships, construction machinery and other fields, such as hydraulic pressing systems of steel plate hot rolling mills.

Installation flexibility and maintenance convenience

The plate connection design complies with DIN24340A standard, making it easy to integrate with hydraulic pipelines. Except for some hydraulic return valves that need to be installed horizontally, most models can be installed in any direction to adapt to different space layouts. The choice of internal oil supply or external oil supply further simplifies the system design. For example, in the centralized oil supply system of hydraulic stations, external pilot oil supply can be achieved through the oil port X to reduce pipeline complexity.