FireFlex DUAL: What Is It and When Should You Choose It?
The FireFlex DUAL system is an integrated fire protection unit that combines clean agent suppression with a preaction automatic sprinkler system in a single factory-assembled cabinet. It is designed for spaces where you want the speed and cleanliness of a gaseous extinguishing agent while keeping the added security of sprinkler protection if the fire grows or conditions change.
This makes FireFlex DUAL a strong option for data rooms, telecommunication rooms, control rooms, archives, museums, and other water-sensitive environments where business continuity matters.
What makes FireFlex DUAL different?
FireFlex DUAL integrates both clean agent and preaction sprinkler functions into one cabinet that is pre-assembled, pre-wired, programmed, and factory-tested. The system is available in single interlock and double interlock configurations, as well as self-contained and remote-controlled versions.
The clean agent side uses SEVO™ FFT-1230™ (FK-5-1-12), a clean extinguishing agent intended for Class A, B, and C fires. Typical design concentration is 4% to 6%, not to exceed 10%. The agent is colorless, electrically non-conductive, and leaves no residue, which is important in occupied and equipment-heavy spaces.
When should you choose a DUAL system?
Choose FireFlex DUAL when the protected area has two competing requirements: you want to extinguish fire quickly without water damage, and you also need a sprinkler-based backup strategy. A typical example is a server room, where a clean agent discharge can suppress fire early without damaging electronics, while the preaction sprinkler portion adds another layer of protection if the event escalates.
It is also a practical option when project teams want to reduce field coordination, since the cabinet is factory-built and much of the integration work is done before delivery.
Available configurations
FireFlex DUAL is available in single interlock preaction, double interlock preaction, self-contained systems, remote-controlled systems, and seismic construction options.
The remote-controlled version provides a junction box with supervisory and control devices prewired to terminals for field connection to a releasing control panel provided by others.
Key technical features
Common features include factory-assembled and factory-tested construction, a robust 14-gauge steel cabinet, lockable doors, compact layout to save floor space, a unique serial number for traceability, FM approval and UL/ULC listing as assembled units, and seismic construction options up to certain cylinder capacities depending on cabinet size. Cabinet sizes such as 36", 46", and 52" formats are noted, with exact dimensions varying by unit and options selected.
Plain-language explanation: single vs. double interlock
Single interlock means one qualifying event, usually detection, opens the valve and admits water into the sprinkler piping, though water does not discharge until a sprinkler operates. Double interlock requires both detection and sprinkler piping pressure loss before water is admitted, adding protection against accidental water entry. In general, double interlock is preferred where accidental water introduction would be especially disruptive.
Practical next steps
Before selecting a FireFlex DUAL system, confirm the hazard type and occupancy, whether single or double interlock is appropriate, whether a self-contained or remote-controlled arrangement fits the project, enclosure size, cylinder capacity, room constraints, and clean agent hold time and enclosure integrity requirements.
Frequently Asked Questions
Is FireFlex DUAL safe for occupied spaces?
The clean agent used is designed for occupied spaces when the system is properly engineered and applied within listed limits.
Does FireFlex DUAL replace sprinklers entirely?
No. It combines clean agent protection with preaction sprinkler protection.
Can it be used in data centers?
Yes. FireFlex source material specifically positions it for sensitive spaces where water damage is a concern.
What is the difference between self-contained and remote-controlled?
A self-contained system includes the integrated panel. A remote-controlled system is wired for connection to an external listed releasing panel.