I got a package from my friend Delmar yesterday, and there were a lot of neat little goodies in it. These are gas elbows for wrs and krs. I made 50 of them when I was nineteen. I sold them all in three years, and they have been on back order ever since. I bit the bullet, and ordered up some more, so if you need them--shoot me an email and I will set you up.
Here are the three pieces that you need to make the part.
Here is the assembly all pressed together.
Here is a neat pic of some of the ones that I assembled this morning. I still have to silver solder them, so that they don't leak.