As an automatic valve, the safety valve relies on the pressure of the medium itself to discharge the overpressure medium. When the system pressure drops to a predetermined value, the valve automatically closes, allowing the equipment to continue to operate. This reusable feature gives the safety valve a certain advantage in scenarios where the pressure fluctuates frequently and the continuous operation of the system needs to be maintained. Unlike safety valves, rupture disc is a disposable pressure relief device. When the system pressure reaches a predetermined burst pressure, the rupture disc quickly ruptures to release the pressure. Although it needs to be replaced after the rupture, the response speed of the rupture disc is very fast. It can complete the pressure relief action at the moment of a sudden rise in pressure, minimizing the time for the equipment to withstand overpressure.
Under certain operating conditions, rupture disc can completely replace the safety valve, and it also has better performance. For example, in the chemical production process containing highly toxic and highly toxic media, the sealing performance requirements are very strict, and even a trace amount of media leakage may cause serious environmental pollution and casualties. There is a mechanical sealing structure between the valve core and the valve seat of the safety valve. After long-term use, there may be small gaps due to wear and corrosion, and absolute sealing cannot be guaranteed. The rupture disc is in a fully sealed state under normal working conditions and has no moving parts, which can avoid the risk of media leakage and provide more reliable safety protection for such high-risk operations.
In the face of highly corrosive, high viscosity or media containing granular impurities, the internal structure of the safety valve is easily eroded or clogged, causing the valve to fail. According to the characteristics of the medium, rupture disc can choose special corrosion-resistant materials such as hastelloy and Monel alloys, or customize special structures so that it can work normally even in harsh environments. In emergency working conditions with high temperature, high pressure and rapid pressure rise, the springs and other components of the safety valve may not be able to open the pressure relief in time due to insufficient response speed, and the rupture disc can break instantly within a few milliseconds, quickly release the overpressure, and control the pressure of the equipment within a safe range to avoid catastrophic accidents.
Although rupture disc has shown strong advantages in many ways, in some cases, the combination of rupture disc and safety valve can play a more comprehensive safety protection role. For systems with frequent pressure fluctuations and allowing micro-leakage, safety valves can undertake daily overpressure relief tasks. Rupture disc is used as an auxiliary safety device to start quickly when the safety valve fails or encounters extreme overpressure conditions, forming a double protection. This combination mode can not only meet the needs of continuous system operation, but also provide reliable backup protection in critical times.
Our company has been deeply engaged in the field of rupture disc R&D and manufacturing for many years, and has been committed to providing excellent safety protection solutions to industrial customers around the world. For B-side buyers, choosing our rupture disc means choosing a reliable security partner. If you have any questions, please feel free to contact us!
