The answer to 'how to clean shut-off valve' is to regularly clean and maintain the shut-off valve to ensure it functions properly. This involves turning the valve on and off several times, inspecting for any leaks or debris, and using a valve cleaning tool or mild cleaning solution to remove any buildup.
It's recommended to clean shut-off valves every 6 months to 1 year, depending on the frequency of use and water quality in your home. This helps prevent the valve from sticking or becoming difficult to operate, which can be a major inconvenience during a plumbing emergency.