Vacuum Brake System

The vacuum brake system is controlled through a brake pipe connecting a brake valve in the driver's cab with braking equipment on every coach.  The operation of the brake equipment on each vehicle depends on the condition of a vacuum created in the pipe by an ejector or exhauster.  The ejector, using steam on a steam locomotive, or an exhauster, using electric power on other types of train, removes atmospheric pressure from the brake pipe to create the vacuum.  With a full vacuum, the brake is released.  With no vacuum, i.e. normal atmospheric pressure in the brake pipe, the brake is fully applied.


Main Parts Introduction

Vacuum Brake Cylinder



Auxiliary Reservoir



Slack Adjuster



Vacuum Hose 



Hose Pipe Clamps



Dummy Coupling



Threaded Swan neck



Vacuum Release Valve



Coupling Heads


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