I made this for my fire department. It's a bracket for use on one of our fire trucks to hold the airline quick disconnect. We hook up air lines to all of the trucks so that the air brakes are ready to go when a call comes in. I cast in a 1/4" pipe nipple so that all we have to do is plumb the airline to one side of the nipple and the quick disconnect on the other side.
Here's the CAD model
I made it as a split pattern and cut them out on the CNC
Here it is as-cast
And after machining/clean-up
All painted up and installed on the truck. It worked out quite well.