I can get SS ball valves with 5/8 inch internal and 7/8 inch external thread.
Comes with a thread that is long enough to go thru the keg wall.
Located lock nuts ss as well.
Other end of the ball valve you can fit a male nylex snap lock hose fitting.
I can also supply a ss nut and tail barb that is 1/2 inch. and or a 90 degree round taht you can fit that will allow you to adjust the pick up point in the kettle ...
will sell them for 35.00 plus freight if anyone is interested...
I will post a pic tomorrow....