- Jan 11, 2010
- Reaction score
I learn new things every day.It had a spring and a small rubber ball (stopper). When the pressure exceeds the spring rate, it opens and allows water to pass. The white tube routes down to the pan drain hole, about 3 inches down the drain pipe.
See explanation above on the Watts valve. I've seen them in several plumbing stores and online. I'd feel ok about mounting the expansion tank on it, but I'd have to use at least two adapters to get from 3/8 to 3/4 and don't want to do that.
I will admit I don't know everything, Just don't tell my wife.
I ALMOST have her convinced.