B-43-N High flow Alternate Fuel Injector Mixer

Model B-43-N Alternate Fuels Injector Mixer


Model B-43-N medium-to-heavy duty, high-flow, injector mixer for use with alternate fuels Compatible handles: Model 43-2 & Model 18-5 (for light alternate fuel heating only)


Model B-43-N is a "F" injector or low-pressure mixer for use with maximum performance, lower-cost, alternate fuels. The B-43-N mixer is recommended for medium-to-heavy duty brazing and heating tip applications only. This model has a mixer-to-tip tube thread size of 1/2" - 25. It heats up to 590,000 BTU. This mixer is UL® listed. Typical applications include metal fabrication, shipbuilding, etc. Alternate fuels include propylene or propane-based fuels and natural gas. NOT FOR USE WITH ACETYLENE.


  • Brass medium-to-heavy duty, high-flow, mixer
  • "F" injector or low pressure mixing system
  • Brazing and heating with alternate fuels
  • 1/2" - 25 mixer-to-tip tube thread size
  • Thread sealants not required when used with genuine Harris mixers
  • Heats up to 590,000 BTU;Heats up to 590,000 BTU
  • Typical applications include metal fabrication, shipbuilding, etc.
  • Marked with Harris logo and model number for easy identification
  • One year warranty
  • UL® listed


Warning -

Cancer and Reproductive Harm -


What's Included

  • Model B-43-N Alternate Fuels Injector Mixer

Warranty Information

  • 1 Year



Certification UL® listed
Compatible Handle Model Number 43-2; 18-5
Compatible Tip Tube Model Number T-43; 2393 – 1 thru 5
Compatible Welding/Brazing Tip Style - Alternate Fuel (Size) 1390 – 20N, 30N & 80N
Duty Medium to heavy
Gas / Gas Service Alternate fuels
Heating Capacity Heats up to 590,000 BTU
Mixer Model Number B-43-N
Welding Capacity F" injector or low pressure


Warranty 1 Year