Kontrol Fire Extinguisher Value Guide

The Kontrol fire extinguisher is a quintessential example of early 20th-century fire safety technology, utilizing a chemical soda-acid reaction to create pressure. These United States-made canisters are highly sought after by collectors for their striking mixed-metal aesthetics and historical significance in industrial design.

What affects the value of Kontrol Fire Extinguisher?

• The presence and clarity of the original brass manufacturer's label significantly impact the $120-$150 price range.
• The condition of the copper patina; high-polish finishes or well-preserved natural aging are preferred over heavy denting.
• Completeness of the unit, including the original rubber discharge hose and the brass nozzle.
• The absence of structural corrosion or 'pinking' of the brass, which can occur from improper storage or chemical leaks.

How to Identify Kontrol Fire Extinguisher?

• Look for the embossed 'Kontrol' brand name prominently displayed on the central brass identification plate.
• Verify the construction materials, which should feature a heavy-gauge copper body with brass fittings and a rubber hose.
• Check for the internal soda-acid mechanism components, though many have been emptied or decommissioned for safety.
• Examine the rivets and seams for 1920-1940 era manufacturing techniques rather than modern welding.

History of Kontrol Fire Extinguisher

Before modern pressurized canisters, fire extinguishers often used chemical reactions to expel extinguishing agents. Soda-acid extinguishers, common in the early 20th century, contained sodium bicarbonate solution and a bottle of sulfuric acid. When activated, the acid mixed with the bicarbonate, producing carbon dioxide gas which pressurized the cylinder and expelled the water. The 'Kontrol' brand was a known manufacturer of such devices during this era, reflecting the prevailing technology for fire safety.