The present invention discloses a railway wagon brake control system and a control method, which belongs to the technical field of train brake control. The system comprises a train pipe and a plurality of disc brakes which are used for braking the wheels o...

The present invention discloses a relay valve, comprising a valve body, wherein the valve body is provided with a main valve body assembly, a C piston assembly, a Cv piston assembly, a pre-control chamber, a brake cylinder chamber and an auxiliary air cyli...