A relief valve is a safety device designed to open and release excess pressure or temperature from a plumbing system, such as a water heater, boiler, or pressure vessel. It helps prevent potential damage, leaks, or explosions caused by pressure build-up. In water heaters, the temperature and pressure relief (T&P) valve is a critical safety component that automatically releases water if either pressure or temperature exceeds safe limits. Regular testing and maintenance of relief valves are necessary to ensure they function properly, providing reliable protection against over-pressurization.
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