0311-0648 - Victor Size 10 MFA Acetylene Heating Nozzle

Heavy-Duty Acetylene Heating Performance

The Victor 0311-0648 10-A-MFA Heating Tip is a premium industrial component engineered for high-efficiency heating applications using acetylene gas. As part of the renowned Victor MFA series, this nozzle is designed to deliver a concentrated, high-temperature flame suitable for demanding fabrication tasks. The "MFA" designation stands for Multi-Flame Acetylene, indicating its specialized construction that optimizes the combustion of acetylene to produce maximum BTU output for its size class. This specific model, the Size 10, is a substantial heating tool capable of handling heavy plate and structural steel.

Constructed from high-grade copper, the 10-A-MFA tip offers superior thermal conductivity, which helps dissipate heat from the tip face and prolongs the service life of the consumable. The one-piece design ensures a robust structure that can withstand the rigors of industrial environments, including exposure to high reflected heat and potential physical impact. It is specifically calibrated to fit Victor 300 Series torch handles, such as the HD 310C, ensuring a secure gas seal and optimal flow characteristics. The tip requires specific pressure settings—typically 30-40 PSIG for oxygen and 12-15 PSIG for fuel—to maintain a stable flame and prevent backfire or flashback scenarios.

In industrial MRO and fabrication settings, the efficiency of heat transfer is critical. The multi-flame configuration of the 10-A-MFA allows for a broad yet intense heat pattern, significantly reducing the time required to bring base metals up to critical temperatures. This is essential for processes such as preheating prior to welding to prevent cracking, post-weld heat treating, or thermal straightening of distorted members. By utilizing acetylene, this tip achieves higher flame temperatures compared to propane or natural gas alternatives, making it the preferred choice for applications requiring rapid localized heating.

Operators must be aware of the gas withdrawal rates associated with a Size 10 tip. With an acetylene consumption rate ranging between 40 and 80 SCFH, it is imperative to ensure that the gas supply system—whether individual cylinders or a manifold system—can sustain this flow without exceeding the recommended withdrawal rate (typically 1/7th or 1/10th of the cylinder capacity). Proper setup ensures not only the performance of the tip but also the safety of the operation.