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Questions - Universal & Triple Valves

Posted by Express Rider on Wed Jan 13 01:12:34 2021

What is the difference between Universal Valve and Triple Valve design and operation?


Also, were the BU's and IRT MUDC's braking systems Triple valve or Universal?

IIRC, Hi-V's were triple valve correct?

Thank you in advance!

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(1565607)

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Re: Questions - Universal & Triple Valves

Posted by italianguyinsi on Wed Jan 13 22:45:13 2021, in response to Questions - Universal & Triple Valves, posted by Express Rider on Wed Jan 13 01:12:34 2021.

The open gate BUs were not MUDCs

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(1565610)

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Re: Questions - Universal & Triple Valves

Posted by Express Rider on Thu Jan 14 01:53:28 2021, in response to Re: Questions - Universal & Triple Valves, posted by italianguyinsi on Wed Jan 13 22:45:13 2021.

Thank you for clarifying - yes, the BU's were gate cars so they could not have had MUDC.

I was asking about their brake systems as well as brake systems on the IRT el fleet.

Whether for each fleet did they have the earlier triple valve brake system, or were they converted at some point to the universal valve system.

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(1565617)

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Re: Questions - Universal & Triple Valves

Posted by randyo on Thu Jan 14 02:37:11 2021, in response to Re: Questions - Universal & Triple Valves, posted by italianguyinsi on Wed Jan 13 22:45:13 2021.

The poster never even implied that they were.

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(1565618)

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Re: Questions - Universal & Triple Valves

Posted by randyo on Thu Jan 14 02:41:38 2021, in response to Re: Questions - Universal & Triple Valves, posted by Express Rider on Thu Jan 14 01:53:28 2021.

None of the BMT el cars were ever changed from the triple valve system even after conversion onto C types and Qs and AFAIK neither were the Manhattan el cars although I had heard about one train of MUDC that had been converted to some form of electro pneumatic braking but it was never made clear whether it was AMRE like the Hi-Vs and Flivvers which would have meant triple valves or AMUE like the Lo-Vs which would have been universal vaklves.

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(1565728)

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Re: Questions - Universal & Triple Valves

Posted by Express Rider on Fri Jan 15 06:17:36 2021, in response to Re: Questions - Universal & Triple Valves, posted by randyo on Thu Jan 14 02:37:11 2021.

Thnak you.

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(1565729)

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Re: Questions - Universal & Triple Valves

Posted by Express Rider on Fri Jan 15 06:21:49 2021, in response to Re: Questions - Universal & Triple Valves, posted by Express Rider on Fri Jan 15 06:17:36 2021.

should read "Thank you" :-)

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