Need help soon with a toilet water supply valve
Under my bathroom sink, a cold water supply line rises through the floor. It passes through a plastic right-angle connector with a "mushroom" looking cap above it, and then returns through the floor. About an hour age, the cap began emiting a sound like air leaking under pressure.
Looks like the connector is some kind of valve (?) in the toilet water supply line, and I'm glad I addressed the sound as soon as I heard it because I just noticed that the black tank is full almost to the bottom of the stool. Turned the water off at the manifold.
Can someone name this connector/valve for me so I can call around and find one. Is this something I could expect to find at a place like Lowes, or am I looking for a specialty rv part? I'd like to take care of this today, preferrably in Lake Havasu City, AZ.