From the point of view of the essence of the function, both the safety valve and the rupture disc can reduce the pressure through the discharge medium when the pressure in the equipment or pipeline exceeds the preset value, but there are obvious differences in the working principle, response speed and applicable environment of the two devices, which also determines their application in different industrial scenarios. The safety valve is a reusable relief device. The working principle is a disc structure driven by a spring or gravity. It automatically opens and discharges when the pressure exceeds the standard, and automatically closes after the pressure returns to normal. It is suitable for scenarios where the medium is clean, the pressure fluctuates gently, and frequent opening and closing are required. For example, in conventional steam boilers and civil heating systems, because the medium is non-corrosive and the pressure fluctuation cycle is stable, the safety valve can be reused to meet the basic discharge needs of the system for a long time.
However, when industrial scenarios are faced with more complex media characteristics, more extreme pressure changes, or stricter safety standards, the limitations of safety valves gradually appear. At this time, the technical advantages of rupture disc have become an important choice to ensure system safety. Rupture disc is a one-time action venting device. Through a metal or non-metallic diaphragm with a preset breaking strength, it breaks instantly when the pressure reaches the set value, achieving large-caliber and unhindered rapid venting. rupture disc is suitable for many types of high-risk scenarios where safety valves are not up to the task.
For example, in corrosive or high-viscosity media scenarios, rupture disc exhibits irreplaceable adaptability. In acid gas treatment devices in the petrochemical industry and corrosive solvent reactors in the pharmaceutical industry, the medium can easily corrode or stick to the disc and sealing surface of the safety valve, causing the disc to become stuck and unable to open and close normally, forming a safety hazard. The rupture disc adopts an all-metal sealed structure or corrosion-resistant non-metallic materials such as polytetrafluoroethylene. There are no moving parts, which can completely isolate the contact between the medium and the external structure and avoid the risk of corrosion and failure.
In addition, in high-pressure, ultra-high-pressure, or fast-boost scenarios, the response speed and discharge capacity of rupture disc far exceed that of safety valves. Hydrogen energy storage cylinders in the field of new energy and high-pressure propellant storage tanks in the aerospace industry often have working pressures as high as hundreds or even several gigapascals, and the pressure rises extremely fast under abnormal operating conditions. Because the safety valve needs to overcome the spring force to open the disc, there is a response delay of tens to hundreds of milliseconds, which may cause the equipment to fail to release in time before the pressure reaches a dangerous value. And our rupture disc adopts precision laser cutting and stress optimization design, the fracture response time can be controlled within 10 milliseconds, and the discharge area of the rupture disc can be accurately calculated according to the volume of the equipment, which can reduce the pressure to a safe range in the shortest possible time.
For B-side buyers, choosing rupture disc is not only to meet the security needs of specific scenarios, but also to achieve a balance between safety, efficiency and cost. By choosing our rupture disc, buyers can not only obtain high-quality products that meet international standards, but also enjoy the full life cycle service support from selection, delivery to after-sales. Whether your industry is petrochemical, new energy or medicine and food, we can provide rupture disc solutions adapted to various complex scenarios to help your company improve equipment safety, reduce operating costs, and ensure production continuity.
