Aluminum CO2 Fire Extinguisher

Electrical Safety Certification

The CD series aluminum CO₂ fire extinguisher is designed for Class B and Class C fire environments, where energized electrical equipment is present.

System classification:

• UL/ULC Rating: 5-B:C to 10-B:C
• USCG classification: Type B:C Size I–II (model dependent)

CO₂ discharge behavior:

• gas phase expansion from liquid CO₂ creates non-conductive discharge stream
• no ionic residue is generated after release

👉 Engineering function: ensures the system can be used directly on energized electrical equipment without conductive risk

Extinguishing Mechanism

The system uses pressurized liquid CO₂ stored in an aluminum pressure cylinder.

Fire suppression process:

• valve opens under mechanical trigger
• liquid CO₂ undergoes rapid phase expansion
• gas displaces oxygen at combustion zone
• surface temperature drops due to -78°C gas expansion effect

Applicable fire types:

• Class B: flammable liquids (fuel, oil, solvent)
• Class C: electrical equipment fire

👉 Functional result: oxygen removal + thermal shock suppression without residue deposition

Product Specifications

Application Targets

This system is not designed for space filling fire suppression, but for localized equipment protection.

Typical installation environments:

• electrical control panels
• server cabinets
• laboratory instrumentation racks
• industrial automation control units

Capacity selection logic:

• 5 lb / 10 lb → cabinet-level protection
• 15 lb / 20 lb → multi-equipment or larger electrical zones

👉 Design intent: suppress fire without interrupting equipment integrity

Aluminum Cylinder Engineering

Each unit uses an aluminum alloy pressure cylinder designed to reduce installation load and corrosion exposure.

👉 Engineering function: aluminum structure reduces corrosion risk in enclosed electrical environments

Discharge Performance System

CO₂ discharge is governed by pressure release + phase expansion dynamics.

Operational behavior:

• high-density CO₂ jet exits through horn nozzle
• jet expands rapidly and forms cold gas cloud
• localized oxygen displacement occurs within short range

👉 Engineering constraint: short-range discharge requires close-proximity operation to electrical equipment

Installation System

All CD series units are configured for fixed wall-mounted deployment.

Installation characteristics:

• mount type: wall bracket system
• vertical cylinder orientation maintains pressure distribution stability
• installation height typically aligned with equipment access zone

System integration:

• no electrical trigger system required
• no piping or detection network integration required
• standalone manual activation device

👉 Engineering purpose: ensure immediate access in electrical fire emergency zones

Emergency Operation Sequence

The operating procedure is defined as a manual mechanical sequence under energized equipment conditions:

• pull safety pin → unlock valve locking system
• aim horn nozzle toward fire base area
• press operating lever → open CO₂ release chamber
• CO₂ liquid expands into low-temperature gas stream
• maintain short-range sweep across ignition zone (1.2–2.4 m)

Critical operating constraint:

• discharge produces -78°C cold gas stream
• operator must maintain safe handling distance to avoid frost injury

👉 Engineering interpretation: operation is a controlled pressure release, not a spraying process

Environmental Operating Range

Operating temperature range: -30°C to 49°C (-22°F to 120°F)

Environmental behavior:

• low temperature: reduced internal vapor pressure stability
• high temperature: increased internal pressure load on valve system
• enclosed spaces: higher CO₂ concentration accumulation risk

Application environments:

• indoor electrical rooms
• industrial control zones
• equipment cabinets in climate-controlled facilities

Failure Modes & Risk Control

Identified engineering risks:

• valve leakage → loss of internal CO₂ pressure
• nozzle icing → restricted discharge flow
• improper distance use → ineffective oxygen displacement
• confined space accumulation → CO₂ concentration hazard

Control strategy:

• pressure sealing inspection during production
• valve torque calibration
• controlled discharge testing per batch
• installation height control for access optimization

Procurement Configuration Logic

To configure a CO₂ fire suppression solution, please provide:

Weimin will respond with: