GF-1 - Gasflux Type B Liquid Brazing Flux Refill 1 Gallon

Optimize Your Brazing with Gasflux Technology

The Gasflux GF-1 1 Gallon Liquid Flux is the cornerstone of the Gasflux process, a method that revolutionizes oxy-fuel brazing by integrating the fluxing agent directly into the fuel gas. Designed to refill Model 69 and other standard Gasfluxer units, this liquid flux is formulated to process through the dispenser and mix with the fuel gas (acetylene, propane, or natural gas) as a vapor. As the flame burns, the flux is deposited on the base metal, providing continuous, regulated protection against oxidation. This method is vastly superior to dipping a hot rod into a can of powder or brushing on paste, as it eliminates the interruption of the heating cycle and ensures 100% coverage of the heat-affected zone.

Technically, the GF-1 liquid flux is a borate-based solution in a volatile solvent carrier. It is specifically engineered for brazing ferrous and non-ferrous metals, including steel, malleable iron, copper, brass, and bronze. When brazing galvanized steel, the continuous flux stream helps to suppress zinc fuming, protecting the operator and preserving the integrity of the coating adjacent to the weld. The flux lowers the surface tension of the molten filler metal, promoting exceptional wetting action. This allows the bronze to "tin" the surface of the base metal more rapidly and flow into joints with superior penetration. The result is a non-porous, high-strength bond that is critical for pressure vessels, tubular structures, and critical mechanical repairs.

Visually, the use of Gasflux liquid flux transforms the brazing experience. The flame takes on a characteristic green hue, indicating active fluxing. The operator gains a clear view of the weld puddle without the visual interference of bubbling, charring paste. Because the flux is applied only where the flame touches, there is no excess flux spread over the part, keeping the surrounding area clean. The residue left behind is minimal and non-corrosive, often eliminating the need for acid dipping or heavy mechanical grinding after the part cools. For professional welders seeking precision and efficiency in bronze welding and brazing applications, the GF-1 liquid flux is the gold standard.

This 1-gallon container provides a substantial supply for professional shops. It should be stored in a cool, dry place away from direct sunlight and ignition sources. When filling your Gasfluxer, ensure the unit is depressurized and follow the manufacturer's instructions to prevent spillage. With GF-1, you ensure your brazing operations remain consistent, clean, and cost-effective.