4 way reversing valve is divided into categories, and different types of 4 way reversing valve have different characteristics, and their working principles are also different. As long as consumers understand the classification and characteristics of the 4 way reversing valve, they can use the appropriate category in the appropriate place.

1. Forced reversing type four-way reversing valve

Forced commutation is to push the main valve to commutate by drawing high-pressure gas directly from the compressor discharge port through a capillary tube. This is a widely used form of reversing, and this type of 4 way reversing valve consists of a main valve and a four-way pilot valve.

2. Unloading reversing type four-way reversing valve

Unloading and reversing is to connect one end of the main valve of the 4 way reversing valve to the air return port of the compressor through a capillary tube, so that its pressure is unloaded, so as to achieve the purpose of reversing. This type of 4 way reversing valve is composed of a main valve and a three-way pilot valve.