The answer to 'difference between shut-off valve' is that a shut-off valve and a stop valve are two distinct plumbing components with different purposes and applications. A shut-off valve is typically used to completely stop the flow of water to a specific fixture or appliance, while a stop valve is used to regulate the water flow.
Shut-off valves are usually installed near the water source, such as the main water line entering the home, or beneath sinks and toilets. They are designed to be opened and closed fully to turn the water on or off as needed, such as when performing maintenance or repairs. Stop valves, on the other hand, are used to adjust the water flow, allowing you to control the volume or pressure of the water. They are commonly found on faucets, showerheads, and other plumbing fixtures.