125LB Wheeled Ansul Redline (Purple K)

The Ansul Red Line CR-I-K-150-C is a 125 lb wheeled cartridge-operated fire extinguisher charged with Purple K (potassium bicarbonate) dry chemical — the highest-rated standard-nozzle wheeled BC unit in the Red Line 150-C family. Rated 320-B:C, it is built for high-hazard environments where large-scale Class B flammable liquid fires and Class C electrical fires are the primary credible hazard, and where a single operator must be able to deploy a high-volume first-response tool without waiting for a fixed suppression system to activate.

Purple K (potassium bicarbonate) is approximately twice as effective per pound as sodium bicarbonate on Class B fires — the reason 125 lbs of Purple K achieves a 320-B:C rating that exceeds what a 150 lb sodium bicarbonate unit delivers. The "I" designation confirms the indicator fill cap as standard, and the "CR" designation confirms the corrosion-resistant epoxy finish for marine, offshore, and coastal environments. The unit carries USCG approval and is the standard wheeled Purple K specification for fuel terminals, offshore platforms, aviation operations, and marine facilities where maximum Class B suppression capacity is required from a single wheeled unit.

Purple K Agent: Superior Per-Pound BC Suppression

Purple K (potassium bicarbonate) suppresses Class B and C fires by interrupting the free-radical chain reaction in the flame zone at the molecular level. Potassium ions neutralize the reactive combustion intermediates faster and more completely than sodium ions, which is why Purple K achieves a 320-B:C rating at 125 lbs while a comparable sodium bicarbonate unit of the same size would carry a significantly lower rating. Purple K provides no Class A coverage and is a BC-only agent — for environments requiring Class A suppression alongside large flammable liquid hazards, specify the FORAY (ABC) wheeled model.

Red Line Wheeled Platform Features

• Indicator Fill Cap: Red stem indicator pops up when the unit is pressurized, providing immediate visual readiness confirmation during monthly inspections without requiring a separate gauge check.
• Corrosion-Resistant Finish: Epoxy paint over polyester powder coat with black anodized fill cap and nozzle body for long service life in marine, offshore, and coastal salt air environments.
• 50-Foot Hose: 3/4 in. x 50 ft discharge hose provides staging flexibility to position the unit at a safe distance from the hazard area while the operator deploys to the fire.
• Self-Contained Cartridge System: The attached nitrogen cylinder is the only pressure source required. No pressure regulator needed, reducing maintenance costs and simplifying activation in an emergency.
• USCG Approved: Meets USCG requirements for wheeled Purple K protection on marine vessels and port facilities.
• On-Site Recharge: After any discharge, a certified technician can recharge the unit on-site using Ansul-approved Purple K dry chemical without shop pressurization equipment.

The CR-I-K-150-C is the standard wheeled Purple K specification for high-hazard BC environments:

• Aviation Refueling and Hangars: Aircraft fueling operations and large hangar areas where aviation fuel fires demand the highest BC suppression capacity from a single wheeled unit.
• Offshore Oil and Gas Platforms: Process modules, wellhead areas, and deck installations where large-scale flammable liquid fires are the primary hazard and the CR finish addresses constant salt air exposure.
• Large Fuel Storage Terminals: Petroleum terminal loading racks, pumping stations, and manifold areas where a maximum-rated wheeled unit is the first-response tool of record.
• Marine Ports and Vessels: Dockside fuel operations, tanker loading facilities, and large vessel engine rooms where USCG-approved wheeled Purple K protection is required.
• Petrochemical and Chemical Processing: Process areas with large flammable liquid inventories where the 320-B:C rating satisfies the maximum credible fire scenario in the facility hazard assessment.

To maintain NFPA 10 compliance and USCG approval, the CR-I-K-150-C must follow a documented maintenance schedule:

• Monthly Visual Inspection: Verify the nitrogen cylinder valve is closed and the safety seal is intact. Check that the indicator fill cap is not pressurized at rest. Inspect the 50-foot hose and nozzle for damage. Confirm inspection tags are current.
• Annual Maintenance: A certified technician must inspect all components, verify nitrogen cylinder condition, check the hose and nozzle assembly, and confirm Purple K agent has not packed. Document on the inspection tag.
• 6-Year Internal Examination: Full internal inspection per NFPA 10 including agent removal and cylinder interior inspection. Recharge with Ansul-approved Purple K dry chemical only.
• 12-Year Hydrostatic Test: The agent tank must undergo hydrostatic pressure testing per NFPA 10 and DOT requirements to verify structural integrity.

How does this differ from the CR-LR-I-K-150-C (Long Range) model?

Both units are 125 lb Purple K wheeled extinguishers rated 320-B:C with the same corrosion-resistant finish and indicator fill cap. The CR-LR-I-K-150-C adds a long-range nozzle that extends the operator's effective standoff distance beyond the standard 25-foot range of this model. Specify the long-range model when the fire hazard scenario — such as an aviation fuel fire or large offshore platform fire — produces radiant heat levels that make 25-foot engagement unsafe. For facilities where 25 feet is an adequate working distance, the CR-I-K-150-C is the appropriate specification.

Why does this unit hold 125 lbs when some Red Line wheeled units hold 150 lbs?

Purple K (potassium bicarbonate) is approximately twice as effective per pound as sodium bicarbonate on Class B fires. The 125 lb Purple K unit achieves a 320-B:C rating — higher than a 150 lb sodium bicarbonate unit — because of Purple K's superior per-pound suppression efficiency. The lower agent weight reflects the agent's effectiveness, not a reduced capacity.

Can this unit be used on Class A fires?

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 on Class A materials. For environments with significant ordinary combustible exposure alongside large flammable liquid hazards, specify the CR-I-A-150-C-1 (FORAY ABC) wheeled model.