Low Pressure Burst Disc (7.5~11.5 PSI)

Low Pressure Rupture Disc

A typical vacuum system is engineered to operate under external (atmospheric) pressure loads and not designed for internal pressurization. AGP sacrificial low pressure burst discs are important and preventative single-use safety devices designed to protect vacuum systems against accidental over-pressurization. For instance, a runaway chamber gas-backfill operation could lead to rapid internal pressurization of a vacuum vessel, possibly exceeding its internal load limits. Aside from protecting delicate system instruments and equipment like vacuum viewports — burst discs will also minimize risk of injury to system operators and/or other laboratory personnel. 

AGP low-pressure burst discs are designed to rupture when they encounter vacuum-to-atmosphere pressure differentials of between 7.5 to 11.5 psi. These low pressure rupture discs have unique stress-patterns scored onto their thin metal diaphragms, effectively pre-stressing them for precise rupture pressure control. AGP burst discs are designed with large deflection areas and are available/certified for two pressure ranges. Low-pressure rupture disc models are designed to rupture between 7.5 and 11.5 psi. Caution, please note that ruptured burst discs cannot be repaired. Once compromised, they must be replaced to make the vacuum system operational again.