A safety valve is a type of pressure control valve that functions in hydraulic systems for purposes such as constant pressure relief, pressure stabilization, system unloading, and safety protection. This product adopts a pilot-operated structure, consisting of two parts: a pilot valve and a main valve. The pressure regulating chamber is isolated from the main oil circuit, and the whole product uses a quick-release cartridge structure, making installation and maintenance convenient. It is widely used in coal mine hydraulic support systems.