What I would like to see is someone make an angle cock that is CLOSED. The angle cock on the lead engine and rear car obviously can't be open if the train is running.
I guess I could cut it off and glue it back on facing the side
When I was modeling in P-48 I made my own angle cocks from brass tube and wire. The handle turned so it could be placed in the open or closed position. I used them with magnetic air hoses so I could connect up the cars and open the angle cocks or uncouple and close them. It was fun for a few minutes then lost it's charm. On my S stuff I'm setting the angle cock handle about halfway so they could be open or closed depending on one's mind......DaveB