0311-0599 - Victor Size 4 MFA-1 Acetylene Heating Nozzle

Victor 0311-0599 4-MFA-1 Heating Tip Assembly: Technical Overview

The Victor 0311-0599, designated as the 4-MFA-1, is a specialized heating tip assembly engineered for use with oxy-acetylene systems. As part of the MFA-1 series, this nozzle is specifically designed to interface with Victor 100 Series torch handles, including the popular 100FC and 100C models. This compatibility ensures that users with medium-duty torch outfits can achieve high-performance heating capabilities without requiring a heavy-duty 300 series handle. The "MFA" designation explicitly indicates a Multi-Flame Acetylene tip, meaning it is constructed to handle the specific combustion characteristics and flame velocity of acetylene gas. It is critical to note that this tip must not be used with alternate fuel gases such as Propane or Natural Gas, as the injector and port designs are not calibrated for those fuels, potentially leading to flashback or instability.

The "Size 4" classification of this tip places it in the lower-to-mid range of heating capacity within the MFA-1 lineup. It operates efficiently within an oxygen pressure range of approximately 8 to 12 PSIG and a fuel pressure range of 6 to 10 PSIG. At these settings, the tip consumes acetylene at a rate of roughly 6 to 15 standard cubic feet per hour (SCFH), making it an economical choice for tasks that require concentrated heat but do not demand the massive BTU output of larger size 8 or 10 tips. The assembly features a one-piece copper construction which aids in rapid heat dissipation, protecting the tip from overheating during prolonged use. The seating surface is machined to precise tolerances and utilizes Victor's proven double O-ring seal design to ensure a gas-tight fit within the torch head, minimizing the risk of leaks and ensuring operator safety.

Industrial MRO professionals and procurement specialists should identify this SKU for applications involving localized preheating, metal straightening, and brazing of heavier sections where a standard welding tip would be insufficient. The multi-flame configuration distributes heat more evenly than a single-orifice welding tip, reducing the time required to bring the workpiece to the desired temperature. This efficiency is paramount in maintenance operations where downtime must be minimized. The 4-MFA-1 represents a balance between portability and power, fitting seamlessly into existing Victor medium-duty inventories.