Shut-off valves are plumbing fixtures that are commonly used to regulate the water supply to your toilet and sink. Even if you bought the most expensive valve, it will leak in due time. Multiple factors can cause leaks, and it is something that you will deal with sooner or later.
A shut-off valve can easily cost you $7 up to $15. And hiring a plumber to replace the valve can cost you $45 to $150. That is a heck of a lot of money to spend on one leaky plumbing fixture. The good news is that you can replace it yourself. And if the shut-off valve is still salvageable, you can even fix it within seconds.
What you need is an adjustable wrench (for convenience), a flashlight (those valves are often installed in a corner or place where light levels are low), and a rag to soak up the leak while you are working on it.
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