10LB Ansul Redline Cartridge (Purple K)

The Ansul Red Line RL-PK-10-G is a premium, cartridge-operated fire extinguisher charged with Purple K (potassium bicarbonate) dry chemical — engineered for high-intensity Class B and C hazards. In environments where flammable liquids like gasoline, diesel, or solvents are handled, such as refineries, aircraft hangars, and fuel loading docks, Purple K provides the fastest and most effective dry chemical knockdown available. As the most effective dry chemical agent for Class B fires — approximately twice as effective per pound as sodium bicarbonate — the RL-PK-10-G achieves a 60-B:C rating from its 10 lb charge.

As part of the Red Line cartridge-operated series, the RL-PK-10-G stores the nitrogen propellant in a separate external cartridge, keeping the agent tank at atmospheric pressure until activation. This eliminates slow pressure loss that can silently render stored-pressure units ineffective, and ensures full discharge reliability in the extreme temperatures and high-vibration conditions of industrial deployment. The unit carries a 12-year limited warranty and is approved by UL, FM, and USCG.

The Science of Purple K: Molecular Chain Reaction Interruption

1. Potassium Bicarbonate Interference

Purple K works through chemical interference. When discharged, the potassium bicarbonate particles enter the flame zone and interrupt the free-radical chain reaction of the fire at the molecular level. It is approximately twice as effective as sodium bicarbonate on a pound-for-pound basis, making it the preferred BC agent for fuel-heavy high-hazard zones.

2. Three-Dimensional Fire Capability

Because Purple K does not sinter, it remains a fine cloud that can wrap around obstacles and piping. This makes it superior for pressure-fed fires where fuel may be leaking from an overhead manifold or running down a vertical surface — scenarios where an agent that only suppresses what it directly contacts would be insufficient.

3. Cartridge-Driven Fluidization

When the plunger is struck, nitrogen enters the bottom of the tank through a specialized nozzle, fluidizing the Purple K powder so it behaves like a liquid. This ensures a consistent discharge even after extended standby in high-vibration environments where agent packing is a common failure mode for stored-pressure units.

Red Line Platform Features

• On-Site Recharge: After any discharge, a technician can recharge the unit in the field by replacing the nitrogen cartridge and agent. No shop pressurization equipment required — essential for remote industrial sites.
• Industrial Construction: Heavy-gauge steel cylinder and rugged hardware engineered for gloved-hand operation and built to survive the impacts common on mining equipment, marine vessels, and industrial floors.
• USCG Approved: Approved for marine vessel use with the proper bracket, with the corrosion-resistant G-series finish providing the durability required in salt air environments.
• 12-Year Limited Warranty: Ansul's 12-year limited warranty from date of delivery.

The Ansul RL-PK-10-G is the primary specified choice for high-volatility zones where maximum Class B suppression performance is required:

• Fuel Loading Racks: Protecting pumping stations and transfer operations where large volumes of flammable liquids are handled.
• Aircraft Hangars: Providing the rapid knockdown required to protect high-value aviation assets from fuel fires.
• Oil and Gas Operations: The standard specification for offshore platforms where Purple K is required for its superior Class B performance in BC-only hazard zones.
• Marine Fueling Areas: Ideal for engine rooms and fueling docks where USCG approval and salt-air corrosion resistance are both required.

To maintain NFPA 10 compliance and ensure your facility passes its fire inspection, the RL-PK-10-G must follow a strict maintenance protocol:

• Monthly Visual Inspection: Verify the nitrogen cartridge safety seal is intact and the activation plunger is in the up position. Confirm inspection tags are current and the hose and nozzle are free of obstruction.
• Annual Maintenance: A certified technician must conduct an internal inspection, verify the agent's fluidity, and weigh the nitrogen cartridge to confirm it holds a full propellant charge.
• 6-Year Internal Examination: Full internal inspection per NFPA 10 including agent removal and cylinder interior inspection.
• 12-Year Hydrostatic Test: Mandatory to verify the structural integrity of the steel pressure vessel.

Where can I find service and genuine agent for this unit?

Visit a specialized fire equipment store or an authorized Ansul distributor to ensure you receive genuine Purple K agent and the correct nitrogen cartridges. Using non-approved agent or incorrect cartridges affects performance and may void the unit's certifications.

Can I use this on a wood or paper fire?

No. Purple K is a BC-only agent. It will knock down visible flames on ordinary combustibles but will not quench deep-seated embers and re-ignition is likely. For environments where Class A combustibles coexist with flammable liquid hazards, ensure your fire safety plan includes a FORAY (ABC) unit for Class A coverage alongside this BC unit.

How do I operate this unit in an emergency?

Strike the activation plunger firmly to pierce the nitrogen cartridge and pressurize the tank, then use the PASS method: Aim the nozzle at the base of the fire, Squeeze the discharge lever, and Sweep from side to side across the base of the flames. The strike step is the critical action unique to cartridge-operated units.