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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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