Commercial kitchens are high-velocity, high-risk environments. The combination of open flames, high-temperature cooking appliances, heavily insulated hoods, and highly flammable grease makes commercial cooking facilities a primary target for catastrophic fires. Traditional water-based systems are completely ineffective against grease fires—introducing water to boiling oil causes explosive flare-ups that can instantly engulf an entire facility.
DeFire USA designs, installs, and services advanced Commercial Kitchen Fire Suppression Systems fully compliant with NFPA 96 (Ventilation Control and Fire Protection of Commercial Cooking Operations) and NFPA 17A (Wet Chemical Extinguishing Systems) standards. We keep your culinary operations safe, compliant, and ready to recover quickly from an ignition event.
Commercial kitchen fires typically originate on cooking surfaces (appliances) or inside the exhaust plenum and ductwork. Our systems utilize a specialized liquid, low-pH wet chemical agent engineered specifically to combat high-temperature Class K grease fires through two simultaneous mechanisms:
When the wet chemical agent is discharged onto hot cooking grease or oil, it undergoes a chemical reaction that converts the lipids into a thick, soapy foam layer. This blanket cuts off the oxygen supply instantly and traps flammable vapors beneath it.
The liquid agent absorbs intense heat rapidly, dropping the temperature of the commercial cooking oil below its auto-ignition point to prevent sudden flashovers and re-ignition.
Every kitchen layout is unique. DeFire USA deploys two primary architectural configurations depending on your kitchen’s flexibility and appliance density:
Nozzles are mathematically calculated, pointed, and fixed directly at specific appliances (e.g., deep fryers, charbroilers, griddles, and woks) based on their exact dimensions.
Delivers an incredibly precise, high-density chemical punch exactly where the hazard exists, making it highly efficient for static, unchanging kitchen lines.
Nozzles are spaced uniformly along the entire length of the hood, creating a continuous, overlapping curtain of wet chemical protection across the entire cooking zone.
Provides total operational flexibility. Chefs can rearrange, swap, or move cooking appliances under the hood without needing to re-pipe or re-calculate the fire system configuration.
A kitchen suppression system does not work in isolation. At DeFire USA, we engineer a fully automated, multi-stage response network that activates seamlessly the moment a fire is detected via mechanical fusible links or electronic thermal sensors:
[Fire Detected] ➔ [Chemical Discharge] ➔ [Automatic Fuel/Power Shutoff] ➔ [Building Alarm Trip]
The system automatically cuts off gas lines and electrical power to all appliances under the hood upon discharge, eliminating the heat source fueling the fire.
Controls are integrated to keep exhaust fans running to draw smoke out of the kitchen while shutting down makeup air fans to avoid feeding fresh oxygen to the hazard zone.
We provide turnkey compliance and protection for all commercial culinary facilities:
| Facility Type | Core Hazard Areas | Critical Compliance Focus |
|---|---|---|
| High-Volume Restaurants | Deep fryers, charbroilers, and high-velocity hoods. | Minimizing operational downtime and post-discharge cleanup layout. |
| Hotel & Resort Kitchens | Massive interconnected hood networks and vertical ducts. | Multi-tank modular systems designed for extensive spatial footprints. |
| Institutional & Cafeterias | High-occupancy facilities (Schools, Hospitals, Corporate). | Flawless integration into the master building fire alarm control panel. |
| Ghost Kitchens & Food Trucks | Compact spaces with high appliance density. | Space-saving, ruggedized mechanical storage cylinders. |
Kitchen fires attract heavy scrutiny from local health departments, insurance providers, and local fire marshals (AHJs). A non-compliant system can lead to immediate operational shutdowns.
At DeFire USA, our specialized technicians manage the entire engineering lifecycle—from precise hydraulic flow calculations and hood nozzle placement to semi-annual NFPA-mandated inspections and rapid system recharging. We ensure your kitchen stays cooking, code-compliant, and fully protected.