LT103 - Miller Smith LT103 Versa-Torch Acetylene Brazing Tip, 1/2"-3/4" Capacity

Technical Overview of the Miller Smith LT103

The Miller Smith LT103 is a specialized screw-on brazing tip engineered for the Versa-Torch system, specifically designed to interface with AT60 threaded tubes and AT600 series twin-flame assemblies. This component is manufactured to strict tolerances, featuring a Drill Size 63 orifice that optimizes gas flow for Acetylene fuel applications. It is strictly rated for Acetylene use and is not compatible with alternate fuel gases such as Propane or Propylene due to flame propagation characteristics and tip geometry.

The LT103 provides a targeted thermal output suitable for brazing copper tubing with an outer diameter (O.D.) ranging from 1/2 inch to 3/4 inch (approximately 12 mm to 19 mm). The threaded connection mechanism ensures a gas-tight seal, minimizing the risk of flashbacks and leaks at the torch head junction. As part of the LT100 Series, this tip represents the mid-range capability within the Versa-Torch lineup, bridging the gap between fine capillary brazing and larger heavy-wall pipe heating.

Technicians utilizing the LT103 benefit from the consistent flame cone produced by the precision-drilled orifice, which allows for even heat distribution around the pipe circumference. This is critical for ensuring proper capillary action of the brazing alloy into the joint fitting. The tip's construction is robust, designed to withstand the high thermal cycles inherent in daily HVAC and plumbing fabrication workflows.