This morning I went to clean up the area around the pipes, and found oen of the dogs had dug just a bit deeper down around it cuz it was damp (I'd thought from the roof-A/C unit's drainpipe above that spot) and cool.

In the process, they'd exposed the *actual* rotary valve I'd been thinking of...on the LEFT side of the pipe (for some reason I'd thought it was on the right).

And that it was leaking a little bit, but the leak appears to be recent cuz it hasn't been damp in the area until after the A/C up top started being used again a fair bit now that it's hot. Dunno what would cause that leak, though I have a thought:
Previously to me capping off the pipe out to the alley (old no-longer-connected supply line) a few days ago, there had been no pressure in that pipe, because any leakage would simply have eventually evaporated inside the pipe, given the length of pipe vs any tiny leak. But now that it's capped, pressure would be able to build up and allow/force leakage back out the pipe (appears to be at the threads above the valve).
I'm not sure of any of that, but it's a thought.
Anyway, I turned that valve on, and after flushing a bunch of rust, now the faucet out there by the shed works again. No leakage at the T or the cap down in the ground (I'd left the pit open to check for this, once I'd gotten it all working).
Faucet itself is a bit leaky, but with a hose connected it all goes into the hose, so no worries cuz I can use that to trickle-water trees.
I'm wondering if it is worth the effort of digging out enough of the old supply pipe on the unused side to get enough grip to be able to twist/pull it out and reuse that pipe for other things? (not sure I could even do it, but I could use the pipe itself for a couple possible projects).
Only 112F today. :/

In the process, they'd exposed the *actual* rotary valve I'd been thinking of...on the LEFT side of the pipe (for some reason I'd thought it was on the right).

And that it was leaking a little bit, but the leak appears to be recent cuz it hasn't been damp in the area until after the A/C up top started being used again a fair bit now that it's hot. Dunno what would cause that leak, though I have a thought:
Previously to me capping off the pipe out to the alley (old no-longer-connected supply line) a few days ago, there had been no pressure in that pipe, because any leakage would simply have eventually evaporated inside the pipe, given the length of pipe vs any tiny leak. But now that it's capped, pressure would be able to build up and allow/force leakage back out the pipe (appears to be at the threads above the valve).
I'm not sure of any of that, but it's a thought.
Anyway, I turned that valve on, and after flushing a bunch of rust, now the faucet out there by the shed works again. No leakage at the T or the cap down in the ground (I'd left the pit open to check for this, once I'd gotten it all working).
Faucet itself is a bit leaky, but with a hose connected it all goes into the hose, so no worries cuz I can use that to trickle-water trees.
I'm wondering if it is worth the effort of digging out enough of the old supply pipe on the unused side to get enough grip to be able to twist/pull it out and reuse that pipe for other things? (not sure I could even do it, but I could use the pipe itself for a couple possible projects).
Only 112F today. :/