NO. 6 E T LOCOMOTIVE BRAKE 247 



PIPING ARRANGEMENT AND EQUIPMENT 



The general arrangement of the various valves, pipes and 

 pipe connections of the No. 6 ET equipment as applied to the 

 locomotive is shown in the accompanying piping diagram. 



The discharge pipe conveys the compressed air from the 

 air pump to the first main reservoir. 



The reservoir connecting pipe connects the two main reser- 

 voirs. 



The main-reservoir pipe leads from the second main reser- 

 voir and serves as a supply pipe to deliver full main-reservoir 

 pressure to the automatic brake valve, the distributing valve, 

 the B-6 feed- valve, the C-6 reducing valve, the maximum- 

 pressure governor, and the red hand of the large air gauge. 



The main-reservoir cut-out cock is placed in the main-reser- 

 voir pipe so that main-reservoir air can be shut off from 

 the brake system when it is necessary to remove any of the 

 apparatus while the brake system is charged. It contains 

 a small bleed hole that allows the air to escape from the piping 

 to the atmosphere when the cock is closed. 



The governor pipe H is connected to the main-reservoir 

 side of the main-reservoir cut-out cock and leads to the maxi- 

 mum-pressure head of the duplex governor, so that this head 

 of the governor is always subjected to main-reservoir pressure 

 regardless of whether the cock is opened or closed. 



The distributing-valve supply pipe E conveys main-reservoir 

 air from the main-reservoir pipe to the distributing valve for 

 use in the locomotive brake cylinders. 



The distributing-valve cut-out cock in pipe E is for the purpose 

 of cutting off the supply of main-reservoir air from the dis- 

 tributing valve when necessary. 



The pipe N leads from the main-reservoir pipe to the red 

 hand of the large air gauge, which registers main-reservoir 

 pressure. 



The brake pipe connects with the train brake pipe, so that 

 it is in direct communication with all triple valves on the cars 

 in the train. It connects with the automatic brake valve 

 through the pipe O, and with the distributing valve through 

 the pipe F. 



