Re: AIR BRAKES 101.... was Re: RGS #20. Was: [HOn3] Division Point K-27 question


Randy Hees
 

Its not narrow gauge but we have a Western Pacific steel caboose with 6 dump valves...    We have no idea why so many...

Randy Hees

On Thu, Oct 8, 2020 at 1:46 PM Earl Knoob <earlk489@...> wrote:
Yes, cabooses have a dump valve as well, but it is a bit fancier it that is can also set the brakes at a service rate to stop the train without an emergency application.  There are emergency brake valves in the cabs of all locomotives, in spot where anyone in the cab can grab them.  On steam locomotives, they are usually on the back wall of the cab in the gangway between the engine and tender.  In addition, there are dump valves inside doghouses where the head end brakeman can pull the air on the train.


From: HOn3@groups.io <HOn3@groups.io> on behalf of John Stutz <john.stutz@...>
Sent: Thursday, October 8, 2020 2:35 PM
To: HOn3@groups.io <HOn3@groups.io>
Subject: Re: AIR BRAKES 101.... was Re: RGS #20. Was: [HOn3] Division Point K-27 question
 
Thanks again Earl

For a clear and concise explanation of RR automatic air brake construction and operation. 

From what you previously wrote, I infer that the dump valve on RGS 20's tender is to allow the head end brakeman to trigger an emergency stop, if he finds cause while monitoring the train.   And I now recall that most cabooses also have one in the cupola, for the same reason.

John Stutz

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