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Published on Dec 31, 2011
Follow along as I explain how the parts in an air brake system work. There may be more videos or this might be the only one. It depends largely on the parts I can get. The valve is a Sealco 110575 four delivery port service relay valve with a decaying ratio feature. I forgot to mention the port with the brass fitting attached to it. It's the "Auxiliary Supply" port which goes to the "Control" port of the spring brake valve and is part of the anti-compounding system.