The answer to 'how to maintain shut-off valves' is to regularly inspect and operate them to ensure they are functioning properly. Shut-off valves are critical for controlling water flow and shutting off the water supply in case of a leak or plumbing emergency. Proper maintenance can help prevent valve failure and water damage.
To maintain shut-off valves, start by visually inspecting them for any signs of corrosion, leaks, or damage. Operate the valve by turning it clockwise and counterclockwise to ensure it opens and closes smoothly. You may need to use a wrench or valve key to turn older, stuck valves. If the valve is difficult to turn or doesn't fully open and close, it may need to be replaced by a professional plumber.