I realize this is real trains and I am building a model but assume it would take someone familiar with the prototype to tell me what this is and where it should be located. The part in question is the U shaped casting with the shutoff valve on top. I don't think it was meant to be one of the glad hands pictured.
I am building a Mullet River NYC caboose and there is no illustration of the part in the directions. I also have pictures of the prototype and can't find it on the inside nor the end platforms. I assume its some sort of shutoff for an airline but again, no clue. Any suggestions appreciated.