30LB Ansul Redline Cartridge (High Flow & Corrosion Resistant) (Purple K)

The Ansul Red Line CR-HF-I-K-30-G (Part No. 418273) is a 30 lb corrosion-resistant, high-flow cartridge-operated hand-portable fire extinguisher charged with Purple K (potassium bicarbonate) dry chemical. The "CR" prefix signifies a corrosion-resistant finish — an epoxy-based paint system applied over the standard polyester powder coat that provides enhanced protection against salt air, chemical vapor, and the aggressive corrosive environments of marine installations, coastal facilities, and offshore platforms. The "HF" designation indicates the factory-configured high-flow nozzle for pressurized liquid and gas fires per NFPA 10.

Rated 120-B:C, the CR-HF-I-K-30-G delivers Purple K at 0.89 lbs per second to an effective range of 20 feet with a charged weight of 49.5 lbs. It carries the same full certification package as the standard HF-I-K-30-G — UL, ULC, FM, and USCG approved — with the additional corrosion-resistant finish for environments where the standard polyester coating alone is insufficient. Every unit includes an Indicator Fill Cap and a Corrosion Resistant Cap as standard features.

What the CR Designation Adds

The standard Red Line polyester powder coat is a durable finish for most industrial environments. The CR (corrosion-resistant) designation adds an epoxy-based paint system that provides meaningfully better protection in salt spray environments, chemical vapor atmospheres, and marine installations. Offshore platforms, coastal petrochemical facilities, marine vessels, and waterfront operations expose extinguishers to conditions that accelerate corrosion of standard coatings. The CR finish extends service life and maintains the cylinder's structural integrity in these environments — important for a life-safety asset that may go years between use.

Included Features

• Corrosion Resistant Finish: Epoxy-based paint system over polyester powder coat for enhanced protection in salt air, marine, and chemical vapor environments.
• High Flow Pressure: Factory-configured high-flow nozzle delivering 0.89 lbs/sec, designed for pressurized flammable liquid and gas fires per NFPA 10.
• Indicator Fill Cap: Red stem indicator pops up when pressurized for immediate visual readiness confirmation.
• Corrosion Resistant Cap: Protects the fill opening against moisture and corrosive atmosphere ingress.
• Field Recharge: Cartridge-operated design allows on-site recharge without shop equipment.
• 12-Year Limited Warranty: Ansul's 12-year limited warranty from date of delivery.

The CR-HF-I-K-30-G is specified for corrosive environments where high-flow Purple K performance is required:

• Offshore Platforms and FPSOs: Deck areas, process modules, and wellhead areas on offshore oil and gas platforms where salt air exposure makes corrosion resistance essential and pressurized fuel fires are a primary hazard.
• Coastal Petrochemical Facilities: Marine terminals, waterfront refineries, and coastal chemical plants where salt air and chemical vapor attack standard coatings aggressively.
• Marine Vessels: USCG approved for shipboard use. The combination of corrosion resistance and high-flow Purple K performance makes this the premium specification for vessel firefighting equipment in salt water environments.
• Waterfront Industrial Operations: Dockside fuel loading operations, ship repair facilities, and harbor industrial installations where salt air and flammable fuel fires coexist.

To maintain NFPA 10 compliance and USCG approval, the CR-HF-I-K-30-G must follow a documented maintenance schedule:

• Monthly Visual Inspection: Verify the nitrogen cartridge safety seal is intact, the pull pin and tamper seal are in place, and the corrosion-resistant cap is undamaged. Inspect the cylinder finish for corrosion damage — the CR finish should be inspected carefully in salt air environments. Confirm inspection tags are current.
• Annual Maintenance: A certified technician must inspect all components including the corrosion-resistant finish, verify nitrogen cartridge condition, check the high-flow nozzle assembly, and confirm Purple K agent has not packed.
• 6-Year Internal Examination: Full internal inspection per NFPA 10 including agent removal, cylinder interior inspection for corrosion, and component replacement as needed.
• 12-Year Hydrostatic Test: The carbon steel agent tank must undergo hydrostatic pressure testing per NFPA 10 and DOT requirements.

What is the difference between this and the HF-I-K-30-G (without the CR prefix)?

The CR-HF-I-K-30-G adds a corrosion-resistant epoxy paint system over the standard polyester powder coat. Both carry 120-B:C ratings and UL, ULC, FM, USCG approvals. The primary differences are the enhanced finish and a slightly lower flow rate (0.89 vs 0.99 lbs/sec) and shorter effective range (20 vs 30 ft). If your installation is in a salt air, marine, or chemical vapor environment, the CR finish is the correct specification. For inland industrial applications without aggressive corrosive exposure, the standard HF-I-K-30-G is appropriate.

Does the corrosion-resistant finish require any special maintenance?

The CR finish should be inspected at each annual service for chips, scratches, or corrosion breakthrough — especially at weld seams, brackets, and any areas where the finish may have been abraded. Touch up any damaged areas promptly to maintain the corrosion barrier. Report significant corrosion findings to a certified Ansul service technician for evaluation before returning the unit to service.

Is this unit suitable for use on offshore oil platforms?

Yes. The CR-HF-I-K-30-G is specifically suited for offshore platform deployment. The corrosion-resistant finish addresses the salt air environment, the high-flow Purple K configuration addresses pressurized fuel fire hazards, and the unit carries USCG approval for marine use. It is one of the few hand-portable extinguishers that satisfies all three requirements simultaneously.