1 point
If it opens but not closing anymore you have a problem. This can happen with old valves.
0 points
1 point
Or, shut off the main first. And do a proper inspection.
Why risk it? Don’t fuck with pipes if you dont know what you’re doing?
Utilities and electric usually require electricians and plumbers. And even though it might be common sense to you, the idiot who burned the house down thought it was too. It’s why there’s code, it’s idiotproof. Each code is written in blood.