In my never ending quest for the most complete TIG welding system I was interested in being able to quickly swap between TIG torches on the Dynasty 350 at work.
Power connectors are easy by using the Safe-Loc connectors from CK Worldwide.
The problem has always been the water connectors. In the past I used the Western Enterprises Oxygen quick disconnects for water, but they eventually become unhappy.
Doing a google search I found that Weldcraft now makes water quick disconnects, but don't bother going to their website since they don't seem to know that they make them.
Luckily you can buy them from several online suppliers.
I found them at Weldfabulous a store on Amazon
I think it is funny that nobody sells a complete system for this.