Hi, I was trying to learn a little bit about my irrigation system and found PVC piping for the irrigation system connected to my main water line. I opened a cap and water started flowing out, so I tried turning the two different knobs/valves on the piping. This did not work, so I turned off the main water at the street, reinstalled the cap, but could not remember which way I should turn the two knobs to regain normal operation. Does anyone know whether to turn the two knobs clockwise or counterclockwise to restart the irrigation system on the inlet/outlet anti-siphon valve?