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0311-0555 - Victor 12-A-MFN Rosebud Heating Assembly for Propane/Natural Gas

Packaging: pack of 1
$150.51/EA $90.83/pack of 1 only $90.83/EASave 40%

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OVERVIEW

Victor 12-A-MFN Heavy-Duty Heating Assembly

The Victor 12-A-MFN (0311-0555) is a premium multi-flame heating nozzle assembly designed specifically for use with alternative fuel gases such as Natural Gas and Propane. As part of the Victor heavy-duty line, this assembly is engineered to provide reliable, high-volume heat output for industrial fabrication and maintenance applications. The unit comes as a complete assembly, featuring both the multi-flame tip and the requisite elbow mixer tube, ensuring proper gas mixing and flow characteristics for safe operation.

This specific model is a Size 12, indicating a very high flow capacity capable of generating substantial BTUs. It is distinct from the MFA series, which is designed for Acetylene; the MFN series utilizes a recessed tip face and specific porting to stabilize the flame of slower-burning fuel gases like propane. This design prevents flame blow-off and ensures a consistent, soaking heat that is ideal for working with large steel sections. The assembly is compatible with standard Victor heavy-duty torch handles, such as the 315FC and other 300-series handles, making it a versatile addition to existing oxy-fuel setups.

Industrially, this tool is indispensable for MRO operations requiring the heating of large castings, preheating of thick plate prior to welding, or the straightening of structural steel members. The brass and copper construction ensures durability and resistance to the intense reflected heat generated during operation. By utilizing propane or natural gas, operators can achieve cost-effective heating for prolonged durations without the cylinder withdrawal limitations associated with acetylene.

Additional Information
Brand:Victor
Gas Type:Natural Gas, Propane
Tip Size:12
Product Type:Heating Assembly
Series:Type MFN
Assembly Components:Tip, Elbow
Torch Compatibility:Victor Heavy Duty Handles (300 Series)
Application:Heavy Heating, Preheating, Straightening
Packaging Description:pack of 1

INCLUDED

  • 1x 12-A-MFN Multi-Flame Heating Tip
  • 1x Heavy-Duty Elbow Assembly

APPLICATIONS

  • Preheating heavy plate before welding
  • Straightening bent structural steel
  • Bending pipe and flat bar
  • Removing seized bearings and pins
  • Flame shrinking
  • Large casting repair preparation

FAQ

This tip is designed specifically for Natural Gas and Propane. It should not be used with Acetylene.

No, for Acetylene you must use the MFA series tips. Using MFN tips with Acetylene can be dangerous and cause flashback or overheating.

It fits Victor heavy-duty torch handles, such as the 315FC and other 300-series handles.

Size 12 refers to the flow capacity and heat output of the tip. A size 12 is a very large tip capable of high BTU output for heavy materials.

Yes, this is a complete assembly that includes the multi-flame tip and the elbow (which acts as the mixing chamber/tube).

Propane is generally cheaper and has no withdrawal rate limits, making it safer and more economical for large, long-duration heating jobs.

The Victor part number is 0311-0555.

Yes, 'Rosebud' is the common industry slang for multi-flame heating tips like this one.