A device designed to replenish the gas supply in inflatable safety equipment such as life jackets or personal flotation devices (PFDs) after deployment. It consists of a carbon dioxide cartridge containing a specific amount of compressed gas (in this instance, 33 grams), along with mechanisms for piercing the cartridge and releasing the gas into the inflatable chamber. For example, a life jacket that has automatically inflated upon water immersion requires such a component to be ready for subsequent use.
The component is crucial for ensuring continued safety and functionality of inflatable safety gear. Its availability allows users to quickly restore the buoyancy of their PFDs in emergency situations. Historically, these systems have evolved from simple manual inflation methods to more sophisticated automatic and easily replaceable gas cartridges, reflecting advancements in maritime and personal safety technology.