Kitchen Fire Suppression

Class K Fire Extinguishers for Commercial Kitchens

Class K fire extinguishers discharge specialized potassium acetate wet chemical agents designed to smother high-temperature cooking oil and grease fires. Every commercial kitchen in Southern California must maintain tagged Class K units under NFPA 10 and California Title 19 regulations.

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Compliance & Technical Summary for Commercial Kitchen Owners

Class K extinguishers serve as the required manual backup to automatic hood suppression systems. When deep fryers, griddles, or wok lines ignite, wet chemical agents create a thick foam blanket through saponification, sealing off oxygen and cooling cooking oil below its auto-ignition point.

Regulatory Requirements: NFPA 10 & California Title 19

Maximum Travel Distance: Mounted within 30 feet of travel distance from cooking equipment.

Required Signage: Placed beside clear hazard instruction placards warning staff to actuate automatic hood suppression prior to utilizing manual Class K extinguishers.

Annual Tagging: Inspected, serviced, and sealed with a valid State Fire Marshal certification tag every 12 months.

Hydrostatic Testing Cycle: Pressure vessel hydrostatic testing and complete internal fluid replacement required every 5 years.

Class K Inspection & Service Checklist

Visual Inspection: Verification of pressure gauge green zone alignment, pull pin seal integrity, and nozzle obstruction clearance.

Weight & Fluid Verification: Checking solution levels and cylinder weight per manufacturer specifications.

Hose & Discharge Nozzle Check: Inspecting non-conductive discharge wands for cracking or blockage.

State Fire Marshal Tagging: Applying annual compliance tags stamped with license credentials.

Common Fire Code Violations Avoided

Local fire marshals and health inspectors frequently issue citations for missing Class K units, expired annual tags, blocked access corridors, or substituting standard ABC dry chemical extinguishers on cooking lines. Using dry chemical on hot cooking grease can cause violent re-ignition or splatter burns.

Class K Sales, Installation & Recharge Services

SOS Fire Services supplies new 6-Liter and 2.5-Gallon stainless steel Class K extinguishers, wall brackets, protective cabinets, and immediate recharge service following system discharge. Contact our Northridge headquarters at (877) 256-0161 for rapid service.

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Get Class K Extinguishers Installed

Every commercial kitchen needs Class K units within 30 feet of the cooking line. We supply, mount, and certify them.

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