Quote: (Originally Posted by
DanFountain)

The point has been made in other threads that sometimes the only difference between a homebuilder and a manufacturer is time.
Dr. Bob, Patrick Duffy, Tom Rose, even Bill Stone - none of these guys probably "invented" this use of the hardware store ball valve. Form follows function.
I certainly did not, but I have had a lot of fun making and diving them. Rob Bradish and I have actually devised an improved DSV we will publish sometime this year. It's disgustingly simple....
Tom