A house is divided into apartments, one on each floor. For one floor which is sometimes unoccupied for lengthy periods, there is a water valve to shut the water off for the whole floor. This mitigates against water leaks developing when the floor is vacant....
I’m not a plumber, nor do I pretend to dabble in plimbing…
Can you switch the ball valve and turn handle to a PVC product? That’s a thing, right?