A safety valve is an important accessory installed on special equipment (such as boilers, pressure vessels, pressure pipelines, etc.) to limit pressure, relieve pressure, and provide safety protection. Safety valves are typically directly mounted on special equipment. Their design, manufacturing, installation, usage, and inspection must comply with the relevant regulations for special equipment, as their operational reliability and performance are directly related to the safety of both equipment and personnel, and are closely linked to energy conservation and environmental protection.