4 way reversing valve is a kind of mechanical equipment, which realizes the combination, distribution and control of various fluids by changing the flow direction of the fluid, and is widely used in hydraulic systems, industrial production and automation devices. This article will introduce the working principle, structural characteristics and application fields of the 4 way reversing valve.

The working principle of the 4 way reversing valve is to use the movement of the spool to control the connection and disconnection of the oil circuit, thereby realizing the change of the flow direction of the hydraulic fluid. The movement process of the 4-way reversing valve can be divided into three stages, namely the initial stage, the working stage and the returning stage.

In the initial stage, the spool is in the middle position and all four ports are closed. During the working phase, the spool is moved by the control of the handle or electromagnet, so that the fluid passes through different channels. Finally, in the return stage, the spool returns to its original position and the four oil ports are closed again.

The structural characteristics of the 4 way reversing valve are composed of valve body, valve core, handle, electromagnet and other components. The valve body includes two channels perpendicular to each other, and each channel has two oil ports communicating with the spool, and the sequence of the oil ports determines the flow direction of the fluid. The handle and electromagnet are the main devices to control the movement of the spool.

The 4 way reversing valve can be combined to achieve a variety of different fluid combinations and distribution methods, so it is widely used in hydraulic systems, industrial production and automation devices. For example, in the hydraulic system, the 4 way reversing valve can control and distribute the flow direction and pressure of the oil, so as to realize the smooth operation of the equipment. In addition, in industrial production, the 4 way reversing valve can realize the connection or switching of multiple outlets of the pipeline. It is also possible to combine multiple 4-way reversing valves to form a more complex control system and improve the automation and production efficiency of the equipment.