30LB Ansul Redline Cartridge (MET-L-KYL)

The Ansul Red Line ML-I-30-G (Part No. 418291) is a 30 lb cartridge-operated hand-portable fire extinguisher charged with MET-L-KYL dry chemical — a sodium bicarbonate-based agent specifically formulated for suppressing fires involving pyrophoric metal alkyls, including triethylaluminum and similar compounds that ignite spontaneously on contact with air. This is a highly specialized industrial unit for chemical processing, petrochemical, and semiconductor facilities handling metal alkyl compounds at commercial scale.

Note: The ML-I-30-G is Not UL Listed. MET-L-KYL agent addresses a unique hazard that falls outside standard UL fire extinguisher test protocols. The absence of a UL listing reflects the specialized nature of the pyrophoric metal alkyl hazard, not a product deficiency. This unit is specified by fire protection engineers for facilities where metal alkyl compounds are documented process hazards. Consult your authorized Ansul distributor and fire protection engineer before specifying this unit.

MET-L-KYL Agent and Pyrophoric Hazards

Pyrophoric metal alkyls — including triethylaluminum, triisobutylaluminum, and similar organometallic compounds — ignite on contact with air and react violently with water. Standard dry chemical agents, water, foam, and CO2 are either ineffective or dangerous on these fires. MET-L-KYL is sodium bicarbonate-based and specifically formulated to suppress these fires without triggering the violent secondary reactions that other agents produce. The agent interrupts combustion and forms a protective barrier that reduces re-ignition risk.

Red Line Cartridge-Operated Platform

• Indicator Fill Cap: The indicator fill cap pops up a red stem when the unit is pressurized, providing an immediate visual readiness confirmation during inspections.
• Cartridge-Operated Reliability: Agent and propellant are stored separately. The agent tank remains at atmospheric pressure until activation, providing reliable long-term standby performance in industrial environments.
• Field Recharge: After discharge, the unit can be recharged on-site by a certified technician using Ansul-approved MET-L-KYL agent. Do not substitute any other dry chemical agent.
• 12-Year Limited Warranty: Ansul's 12-year limited warranty from date of delivery to the original end-user purchaser.

The ML-I-30-G is specified for facilities where pyrophoric metal alkyl compounds are handled at industrial or commercial scale:

• Chemical Processing Plants: Facilities producing or using trialkyl aluminum compounds in polymerization catalyst systems and chemical synthesis processes.
• Petrochemical Facilities: Areas where metal-organic catalysts used in polyethylene, polypropylene, and related processes are stored or handled.
• Semiconductor Manufacturing: Process areas handling metal-organic precursor compounds used in chemical vapor deposition and epitaxial growth.
• Research and Development: Laboratories and pilot plants conducting organometallic chemistry at scale where pyrophoric metal alkyl fire risk is documented.

The ML-I-30-G requires NFPA 10 maintenance with additional considerations for the specialized MET-L-KYL agent:

• Monthly Visual Inspection: Verify the nitrogen cartridge safety seal is intact, the pull pin and tamper seal are in place, and the indicator fill cap shows no pressurization at rest. Confirm the unit is accessible and inspection tags are current.
• Annual Maintenance: A certified technician familiar with MET-L-KYL agent must inspect all components and verify agent condition. Do not substitute any other dry chemical agent for MET-L-KYL.
• 6-Year Internal Examination: Full internal inspection per NFPA 10 including agent removal and replacement with fresh Ansul-approved MET-L-KYL agent.
• 12-Year Hydrostatic Test: The carbon steel agent tank must undergo hydrostatic pressure testing per NFPA 10 and DOT requirements.

Why is this unit Not UL Listed?

UL fire extinguisher listing programs test against standardized fire classes. Pyrophoric metal alkyl fires are outside the scope of standard UL test protocols. The unit is manufactured to Ansul's quality standards and is approved by UL, ULC, FM, and USCG — the Not UL Listed notation refers specifically to the absence of a standard fire class rating, not a product quality concern.

Why can't I use a standard dry chemical extinguisher on a pyrophoric metal alkyl fire?

Pyrophoric metal alkyls react violently with moisture, and many dry chemical agents contain moisture-absorbing components that can cause dangerous secondary reactions on these fires. Water, foam, and CO2 are contraindicated. MET-L-KYL agent is formulated to suppress these fires without triggering secondary reactions.

What is the difference between MET-L-KYL and MET-L-X?

MET-L-KYL is a sodium bicarbonate-based agent designed for pyrophoric metal alkyl (organometallic) fires — compounds that ignite on contact with air. MET-L-X is a sodium chloride-based agent designed for Class D combustible metal fires involving magnesium, titanium, zirconium, and alkali metals. Specify the correct agent for the specific hazard in your facility.