350LB Wheeled Ansul Redline (MET-L-KYL Dry Chemical)

The Ansul Red Line CR-I-ML-350-C is a 350 lb wheeled cartridge-operated fire extinguisher charged with MET-L-KYL dry chemical agent — a specialized formulation developed specifically for pyrophoric metal alkyl fires, including trialkyl aluminums and similar Class B metal-organic compounds that ignite spontaneously on contact with air or moisture. This is a highly specialized hazard found in the chemical processing, petrochemical, and semiconductor manufacturing industries, and the CR-I-ML-350-C is the high-volume portable suppression solution for facilities that handle these materials at industrial scale.

Note: The CR-I-ML-350-C is Not UL Listed. MET-L-KYL agent does not carry a standard UL fire rating due to the highly specialized and unique nature of pyrophoric metal alkyl hazards, which fall outside the scope of standard UL fire extinguisher test protocols. This unit is specified for facilities where MET-L-KYL fires are a documented process hazard and where the facility's fire protection engineer has determined this agent is required. Consult your authorized Ansul distributor and fire protection engineer before specifying this unit.

MET-L-KYL Agent and Pyrophoric Hazards

Pyrophoric metal alkyls — such as triethylaluminum, triisobutylaluminum, and similar compounds — ignite spontaneously when exposed to air and react violently with water. Standard dry chemical agents, water, foam, and CO2 are ineffective and potentially dangerous on these fires. MET-L-KYL agent is specifically formulated to suppress these fires without causing the violent secondary reactions that other agents would produce. The agent smothers the burning material, interrupts the combustion process, and forms a protective coating that reduces re-ignition risk.

Red Line C Model Platform

• 350 lb Capacity: Provides the agent volume needed for large pyrophoric spill fires at the scale common in chemical processing operations.
• Large Diameter Steel Wheels: Wheel centerline near center of gravity for single-operator maneuvering to the fire source.
• Two-Position Ball Valve Nozzle: Aluminum barrel provides a solid, round agent stream with stop-start control during approach.
• On-Site Recharge: Cartridge-operated design allows field recharge without shop pressurization equipment.

The CR-I-ML-350-C is a specialized unit for facilities handling pyrophoric metal alkyl compounds at industrial scale:

• Chemical Processing Plants: Facilities producing or using trialkyl aluminum compounds and similar organometallic materials in polymerization and chemical synthesis processes.
• Petrochemical Facilities: Areas where metal-organic catalyst compounds are used or stored.
• Semiconductor Manufacturing: Cleanroom and process areas handling metal-organic precursors used in deposition and epitaxial growth processes.
• Research and Development: Laboratories and pilot plants where pyrophoric metal alkyl chemistry is conducted at scale.

The CR-I-ML-350-C requires the same NFPA 10 maintenance schedule as other Red Line wheeled units, with additional considerations for the specialized nature of the MET-L-KYL agent:

• Monthly Visual Inspection: Verify nitrogen cylinder safety seal is intact, wheels and tires are undamaged, and the nozzle and hose are free of damage. Confirm inspection tags are current.
• Annual Maintenance: A certified technician familiar with MET-L-KYL agent must inspect all components and verify agent condition. MET-L-KYL agent has specific handling requirements — do not substitute other dry chemical agents.
• 6-Year Internal Examination: Full internal inspection per NFPA 10 including agent removal and replacement. Use only Ansul-approved MET-L-KYL agent for recharge.
• 12-Year Hydrostatic Test: The welded steel agent tank must undergo hydrostatic pressure testing to verify structural integrity.

Why is this unit Not UL Listed?

UL fire extinguisher listing programs test agents against standardized fire classes (A, B, C, D). Pyrophoric metal alkyl fires fall outside these standard classifications — they are not covered under existing UL test protocols. The absence of a UL listing does not indicate a product deficiency; it reflects the highly specialized nature of this hazard, which requires a purpose-built agent rather than a general-purpose suppression solution.

Why can't I use a standard BC or ABC extinguisher on a pyrophoric metal alkyl fire?

Pyrophoric metal alkyls react violently with moisture. Many dry chemical agents contain moisture or moisture-absorbing components that can cause dangerous secondary reactions when applied to burning pyrophoric materials. MET-L-KYL agent is specifically formulated to suppress these fires without triggering secondary reactions. Water, foam, and CO2 are all contraindicated for pyrophoric metal alkyl fires.

Where do I source MET-L-KYL recharge agent?

MET-L-KYL recharge agent must be sourced through an authorized Ansul distributor. Do not attempt to recharge this unit with any other dry chemical agent — only Ansul-approved MET-L-KYL agent is compatible with this unit and safe for its intended hazard.