12-1401-06 - Smith Little Torch Tip Size 6 Curved 6585 BTU

Technical Overview of the Smith Little Torch #6 Curved Tip

The Smith Little Torch #6 Curved Tip (SKU: 12-1401-06) is a precision-engineered component designed for the Smith Little Torch oxy-fuel system. This tip distinguishes itself within the 12-1401 series through its robust thermal output and broad fuel gas compatibility. At the core of the tip's construction is a synthetic sapphire insert. This industrial-grade crystal is laser-drilled to create a perfectly concentric orifice with a diameter of 0.037 inches (Drill Size 63). The use of sapphire is critical for maintaining laminar gas flow and flame stability, as the material is highly resistant to thermal expansion and oxidation compared to traditional metal orifices. This ensures that the flame characteristics remain consistent even during prolonged duty cycles.

Thermodynamically, the #6 tip is rated to produce 6,585 BTU per hour. This output is achieved at a standardized inlet pressure of 6 PSI for both the oxygen and fuel lines. The volumetric flow rates required to sustain this output are 5.38 cubic feet per hour (CFH) for oxygen and 4.48 CFH for fuel. These specifications make the #6 tip significantly more powerful than the micro-tips in the series (sizes #1 through #3), allowing it to bridge the gap between micro-soldering and light-industrial brazing. Specifically, the thermal mass generated is sufficient to braze copper piping with diameters ranging from 3/8 inch to 3/4 inch, making it a viable tool for HVAC and plumbing applications requiring precision heat application in confined spaces.

A key technical differentiator of the #6 tip is its fuel gas versatility. While smaller orifices in the Little Torch line are often restricted to Acetylene or Hydrogen due to flame propagation speeds and backfire risks, the #6 orifice geometry supports the combustion characteristics of alternative fuels. It is fully compatible with Acetylene, Hydrogen, Propane, Propylene, and Natural Gas (Methane). This flexibility allows operators to utilize safer or more economical fuel sources without compromising the integrity of the torch system. The tip attaches to the standard Little Torch handle via a threaded connection that ensures a gas-tight seal, critical for preventing leaks in high-pressure oxy-fuel environments.