Product Description

The function is to cut off the air supply line of the trailer according to the driver's control, and at the same time, connect the air supply line with the atmosphere for braking.



Trailer brake valve has three ventilation ports: one through the storage cylinder, one through the main car brake valve, and one through the separation switch. When the car brakes, the compressed air from the main car brake valve into the trailer brake valve, close the storage cylinder (wet storage cylinder) air inlet channel, cut off the air source, so that the trailer brake valve to the separation switch air pipe in the compressed air is quickly discharged.



Trailer on the distribution valve because of the air cut off and the trailer on the storage cylinder in the compressed air into the trailer brake air chamber, and the main vehicle together with the braking effect, relax the brake pedal to lift the brake, from the main vehicle brake valve compressed air is discharged into the atmosphere, the trailer while lifting the brake.