Which method is used to store expelling gas until system activation in fire protection systems?

The use of gas cartridges in fire protection systems is relevant because they provide a reliable means of storing expelling gas that is ready for activation when needed. Gas cartridges typically contain pressurized gas and are designed to release it quickly upon system activation. This method is particularly effective in systems such as fire suppression or extinguishing systems where a rapid response is critical to control a fire.

These cartridges are compact, can be easily integrated into various fire protection systems, and ensure that the gas is stored safely until the system detects a fire and activates. The pressurized nature of gas cartridges also means that they can deliver the necessary force to operate suppression systems immediately, making them essential in firefighting applications.

In contrast, pressure tanks typically store liquids under pressure but may not be as quick to release gas as cartridges, while safety valves are designed to release pressure to maintain safe operating conditions rather than store gas. Liquid cylinders are used to store liquids, which may not be suitable for systems that require gas for immediate expulsion. Thus, gas cartridges are specifically tailored for the storage and rapid deployment of expelling gas in fire protection systems.