The Application segmentation of the Pressure Relief Systems market allocates demand across end‑use sectors, each reflecting unique process pressures, fluid characteristics, and safety standards. In the Oil & Gas segment, high‑pressure drilling and processing facilities drive the largest share, as operators require robust, fail‑safe devices to mitigate blowout risks. Chemical & Petrochemical plants prioritize corrosion‑resistant materials and precise relief settings to handle aggressive media, contributing a substantial portion of the market. Power Generation utilities depend on reliable relief systems for steam turbines and boiler circuits, where downtime translates directly to revenue loss. The broader Manufacturing arena, encompassing food, pharmaceuticals, and metalworking, adopts a mix of valve types to comply with diverse regulatory regimes and process variability. Finally, the Marine sector, though smaller, necessitates compact, vibration‑tolerant solutions for propulsion and cargo handling systems. This application‑driven market taxonomy underpins investment decisions and informs product development priorities across the industry.