Originally Posted by Banjo Bear
Which unit do you have? Where is the second valve?
I have a 19H also. The two valves on mine are fairly close together and right at the pump. I know on mine there isn't a lot of room where the pump is so it was fairly easy to see both valves.I would take a picture but mine is at the dealer for repairs.
If I recall, the valve for the clear siphon hose was to the left of the pump looking staight at it. The valve for the fresh water tank was to the right.