タイトルまたは説明

The function of the relay valve is to prevent the overlap of forces in the combined spring brake cylinder and spring brake chamber when the traveling and parking systems are operated simultaneously, so as to avoid overloading the mechanical transmission components and making the spring brake cylinder fill and exhaust rapidly.

1. Install four circuits: the main role of the four circuits is to separate the front brake, rear brake, handbrake and other air from each other, to ensure that problems in one way will not affect the other circuits.

2. Four circuit protection valve: four circuit protection valve (later referred to as four protection valve) is composed of four pressure-limiting check valves arranged in a certain relationship, part of the appropriate additional function of the rest of the body, in order to achieve the commercial vehicle brake system in the gas supply can ensure the normal work of each circuit independently.