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ST3AM3D_HAMS t1_it0cgl6 wrote

I'm sure. There no access panels in the drywall, nor any valves in the furnace room where the main waterline splits off

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--Ty-- t1_it0gjsn wrote

Damn. Well, in terms of figuring out which line leads to the spigot, and only the spigot, I have no idea how that would be possible without removing drywall to get a look.

r/Plumbing may know of some more advanced techniques to sound the line.

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