Can anyone tell me, by this picture, if this is a compression type valve? I’m needing to replace this toilet and want to replace the valve and supply also.
If there is a second floor above this, open all the faucets.
Then, when you unscrew this valve, expect a half gallon or so of water to eventually come out of the stub. The last cup takes much longer than the first cup.
The drywall will get soaked.