Safety valves are essential devices used in various industries to prevent pressure buildup in systems like boilers and pressure vessels. They automatically release excess pressure when it exceeds a predetermined limit, ensuring safe operation and protecting equipment from potential damage or failure. These valves are designed to open quickly and close tightly once the pressure returns to a safe level. Commonly found in systems involving steam, gas, or liquids, safety valves play a crucial role in maintaining safety standards and preventing accidents in facilities such as power plants and chemical processing units.