Water still flowing after closing shut off valve?

Hey everyone, I'm changing out my old sweat valves to compression in an upstairs bathroom (for the sink) due to a slow leak. I've never shut the water off to the whole house before and am a little confused. Here is a picture of my shut off valves. There are three valves, one to the left of the water meter, one to the right of the meter, and one higher up the wall on the right side. I assumed the one to turn was the one in the middle, directly to the right of the meter, so I turned that clockwise and turned on the faucet of my utility sink (on the same floor) as well as the sink up two floors above which is on the same level as the sweat valves i'm replacing. Although the water pressure seemed to go down a little after a while, it never stopped. Did I not let the faucets run long enough (ran them for about 20 min), or is the valve I turned in fact not the correct one? Thanks for any advice!

Submitted May 01, 2016 at 05:20AM by KaukalaikikiTeine http://ift.tt/1NcaHLO