30LB Amerex B570 - Sodium Chloride Chemical Class D Fire Extinguisher - OEM

The Amerex B570 is a 30 lb Class D dry powder fire extinguisher engineered for the most dangerous and high-temperature fire scenarios in the industrial world: combustible metal fires. Ordinary extinguishing agents, such as water or CO2, are not only ineffective on Class D hazards but can be catastrophically dangerous, causing violent explosions or hydrogen gas releases. The Amerex B570 is the professional solution, utilizing a specialized Sodium Chloride based dry powder to safely encapsulate and extinguish burning metals.

Designed for high-risk environments like aerospace foundries, CNC machining centers, and research laboratories, the B570 is a "Special Hazard" tool. It is specifically formulated to handle magnesium, sodium, potassium, and sodium potassium alloys (NaK). When your facility works with reactive metals, the Amerex B570 is not just an option it is a code-mandated necessity for life safety and property protection.

The Physics of Suppression: Sintering and The Heat-Absorbing Crust

• Thermal Conductivity Management: Combustible metals burn at temperatures exceeding 5,000°F. The sodium chloride agent in the B570 acts as a massive "Heat Sink," drawing thermal energy away from the metal.
• Oxygen Exclusion: As the agent is applied, it undergoes a phase change where the salt particles melt together to form a solid, oxygen-proof crust. This crust adheres to the burning metal, preventing the "wicking" effect that allows metal fires to spread.
• Prevention of Re-Ignition: Because the crust remains intact long after the discharge has stopped, it prevents molten metal from re-igniting upon exposure to air a common failure point with generic suppression agents.

The "Soft-Flow" Advantage: Engineering for Operator Safety

• Non-Dispersing Application: High-pressure discharge from a standard unit would blast burning metal shavings (swarf) across the facility. The B570's soft-flow wand allows the powder to "fall" onto the fire, building the protective crust without disturbing the hazard.
• Safety Stand-Off Zone: Metal fires emit intense UV radiation and toxic fumes. The long extension wand allows the operator to maintain a safe distance while ensuring precision placement.
• Versatile Discharge: For fires requiring greater reach, the extension applicator can be detached. This allows for a "straight-stream" discharge for fires inside a large foundry furnace or on a high shelf.

The Amerex B570 is the specified choice for facilities dealing with reactive metals:

• Aerospace & Defense: Essential for protecting titanium and magnesium components used in aircraft engine assemblies.
• CNC Machining & Fabrication: Protecting shops from "Swarf" fires the highly flammable metal shavings produced during milling.
• Foundries & Die-Casting: Providing the primary first-response tool for molten metal spills.
• Automotive Manufacturing: Protecting production lines for magnesium engine blocks and aluminum alloy frames.

Because the B570 protects against extreme hazards, it requires a rigorous maintenance cycle as dictated by NFPA 10:

• Monthly Visual Inspection: In industrial shops, dust buildup is a concern. The wand and nozzle must be clear of metal debris. Ensure each unit is properly identified with a clear fire extinguisher label.
• Annual Maintenance: A certified technician must verify that the sodium chloride powder is "free-flowing." If the powder becomes "packed" due to heavy machinery vibration, the unit may fail.
• 6-Year/12-Year Service: This includes internal inspections and a high-pressure hydrostatic test to verify the structural integrity of the steel cylinder.

What is the difference between the B570 and the B571?
The B570 (Sodium Chloride) is the "General Purpose" Class D unit. The B571 (Copper Agent) is specifically designed for Lithium fires. Many businesses searching for specialized fire protection options for electronics often forget they also need Class D protection for their machining areas.

How does the cost compare to standard units?
While the initial cost for a Class D unit is higher than a standard ABC model, it is "Catastrophe Insurance." Without a Class D unit, a metal fire can become an uncontainable building-wide event.

Where can I find these units and accessories?
Always source your specialized equipment from a certified provider. If you need a specialized fire extinguisher cabinet to protect your B570 from industrial grime, ensure it is sized correctly for the 30 lb cylinder and extension wand.