What Is The Difference Between A Pressure Relief Valve And A Safety Relief Valve?

Core differences between pressure relief valve and safety relief valves:
Core functions
Pressure relief valve: Dynamic control of system pressure to prevent equipment damage due to pressure fluctuations (e.g. hydraulic system pressure control).
Safety pressure relief valve: Emergency full opening in case of extreme overpressure to prevent explosion and other disasters (such as boiler overpressure protection).
Mode of work
Pressure relief valve: opening is proportional to pressure and pressure is released gradually (the higher the pressure, the greater the opening).
Safety pressure relief valve: In case of excessive pressure, immediately open all, quickly discharge media.
Application scenario
Pressure relief valve: air conditioning, water pipe network, hydraulic equipment (precise pressure control required).
Safety pressure relief valve: boiler, pressure vessels, gas pipelines (high-risk scenario).
Key differences
Pressure relief valve in ``adjustment '', safety pressure relief valve in ``protection ''.
The two are often used together (e.g. chemical equipment: pressure relief valve pressure control + safety pressure relief valve redundancy protection).
Selection Recommendations: Select according to system requirements-pressure relief valve for daily pressure control, safety pressure relief valve for limit protection.