The 4 way reversing valve is an aspect that cannot be ignored, and it plays a very important role in air conditioning.

The 4 way reversing valve consists of three parts: pilot valve, main valve and solenoid. It consists of four identical one-way valves in total, which function to switch between cooling and heating. If the direction is reversed, the cooling and heating rooms cannot be converted to each other, and cooling or heating cannot be performed.

In fact, the 4 way reversing valve on the air conditioner is used for reversing, that is, a reversing valve for cooling and heating, and the same is true for inverter air conditioners.

Specifically, the function of the 4 way reversing valve is to realize the mutual conversion between cooling and heating by changing the flow direction of the refrigerant in the system pipeline.

When the 4 way reversing valve is not charged, it is the cooling mode, the refrigerant comes out of the compressor, first enters the condenser through the 4 way reversing valve for cooling, then throttles, and enters the indoor unit evaporator.