When should I choose FireFlex DUAL for NFPA 13 and NFPA 2001 compliance?

Choose FireFlex DUAL when the project needs two protection layers: clean agent first, sprinkler backup second.

What the option means

FireFlex DUAL combines a preaction sprinkler arrangement and a clean agent arrangement in one Integrated Fire Protection System. The clean agent acts first. If the fire continues or reignites, sprinkler protection is available as backup.

When to choose it

Choose FireFlex DUAL when:

the contents are water-sensitive,
the owner wants suppression before sprinkler discharge,
the design still requires sprinkler backup,
business continuity is critical.

Why it helps with compliance

This approach aligns well with projects that need:

clean agent design under NFPA 2001
sprinkler protection under the applicable sprinkler code basis
listed and approved clean agent system components

FireFlex documentation states the SEVO system used in DUAL is UL/ULC Listed and FM Approved and designed per NFPA 2001.

Best-fit applications

data and telecom environments
control rooms
critical electrical spaces
facilities wanting redundancy beyond clean agent alone

Frequently Asked Questions

Is FireFlex DUAL a replacement for sprinkler protection?
No. It is a coordinated solution that adds clean agent suppression and sprinkler backup.

Is single or double interlock better for DUAL?
Single interlock is often chosen for faster filling after detection. Double interlock is chosen when accidental water entry must be minimized more aggressively.

Can DUAL help protect critical equipment?
Yes. That is one of its strongest use cases.

Where can I review supporting materials?
- Download Notifier NFS-320 Datasheet
- Notifier-NFS-320
- force-500-tech
- QUOTE MY DUAL

Technical references used
FireFlex DUAL product page, single interlock and double interlock datasheets, and FireFlex Academy product overview.