In a high rate of discharge fire extinguishing system, what is typically used to prevent the release of agent in case of a fault?

In a high rate of discharge fire extinguishing system, a breakable disk is utilized to prevent the release of the extinguishing agent in the event of a fault. This component is designed to maintain the integrity of the system under normal operating conditions. The breakable disk works by holding back the pressurized agent until certain conditions are met, such as the activation of the fire detection system. When a fault occurs, such as an unintended activation or a malfunction, the breakable disk ensures that the agent does not release unintentionally, thereby preventing a hazardous situation.

Other components, such as check valves, safety switches, and backup regulators, serve different purposes in the system. Check valves are used to prevent backflow within the system, safety switches are designed to toggle the system on or off for safety measures, and backup regulators help maintain the appropriate pressure levels but do not directly prevent unintended discharge. The unique role of the breakable disk in controlling the release of the fire extinguishing agent under fault conditions makes it a vital safety feature in high rate of discharge systems.