Abstract: Safety valves and rupture discs are widely applied as key safety accessories in the petrochemical industry and they play a crucial role in protecting against overpressure in the system. This paper briefly analyzes the working principles of safety valves and rupture discs and their working characteristics when used separately. It introduces the combination setting types and application scenarios of safety valves and rupture discs. The paper also discusses the precautions for the combination setting of safety valves and rupture discs, aiming to provide reference for engineering designers.

Key words: safety valve, rupture disc, combination setting