Hi Phil,
Forgive me for hijacking your thread so early, but where did you get that GREAT "florida-room" screen cage?
About your valve question....it's counterintuitive, but the valve HANDLE doesn't point in the direction of flow on those valves. If you have a clear basket vacuum cover on your pumps, try opening (or closing) the valves to see the effect on the supply-side water in the pump window. That will demonstrate the "open" position of the valves for you. (open=90 degrees or perpendicular to the waterpipe direction)
I'm sure someone will explain it better, but I had to write my best in order to avoid the appearance of hijacking
STS
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