MFA-6 - Victor Style MFA-6 Oxy-Acetylene Rosebud Heating Tip

Technical Overview of the MFA-6 Heating Head

The Victor Style MFA-6 Heating Head is a specialized multi-flame nozzle designed for medium-to-heavy duty heating applications using an oxy-acetylene gas mixture. Engineered to fit standard Victor-style 300 and 310 series torch handles, this component is essential for professionals requiring precise thermal control during fabrication and repair processes. The MFA series is distinctively characterized by its 'rosebud' configuration, which utilizes multiple orifices to produce a large, soft flame that distributes heat evenly across a wider surface area compared to single-point welding tips.

Constructed from high-grade copper, the MFA-6 ensures optimal thermal conductivity and resistance to the high temperatures generated during operation. The tip size #6 indicates its flow capacity and heat output potential, making it suitable for preheating weldments, straightening distorted structural members, and bending pipes or bars. It is critical to note that this tip is designed exclusively for acetylene gas; the use of alternate fuel gases such as propane or propylene requires different tip designs (such as the MFN series) to prevent backfires and ensure proper combustion ratios.

Installation is straightforward via the threaded coupling nut, which secures the head to the torch mixer assembly. The double O-ring seal design prevents gas leakage, ensuring safety and efficiency. Operators must ensure their acetylene cylinder capacity is sufficient to support the draw rate of a size 6 tip to prevent acetone withdrawal from the cylinder, typically following the 1/7th or 1/10th rule depending on the cylinder type.