TYPE79E-3 - Uniweld TYPE79E-3 Harris Style #3 Brazing Elbow for UM43 Mixer

Technical Overview of the Uniweld TYPE79E-3 Brazing Tip

The Uniweld TYPE79E-3 is a precision-engineered brazing and welding tip designed to meet the rigorous demands of industrial metal joining. Part of the renowned Type 79E series, this component is specifically manufactured to interface with the Uniweld UM43 mixer, ensuring a leak-proof and efficient gas mixing chamber connection. The tip features a #3 orifice size, which is calibrated to deliver a specific BTU output suitable for medium-duty applications, ranging from HVAC copper tube brazing to general maintenance and repair welding.

Structurally, the TYPE79E-3 utilizes a high-grade copper tubing construction for the main elbow section. Copper is selected for its superior thermal conductivity, which aids in keeping the tip cool during prolonged operation, thereby reducing the risk of flashback and extending the consumable's lifespan. The base of the tip is machined from brass, providing durable threads and a secure seating surface against the mixer. This bi-metal construction represents a standard in high-quality oxy-fuel equipment, balancing thermal management with mechanical durability.

The "Elbow" designation refers to the curvature of the tip tube, a critical design feature for accessing joints in confined spaces where a straight tip would be impractical. This geometry allows the operator to direct the flame cone precisely onto the workpiece while maintaining a comfortable torch angle. As a Harris-style component, it adheres to the dimensional standards expected by users of Harris oxy-fuel systems, providing a seamless aftermarket replacement or upgrade option that maintains the flow characteristics and flame stability professionals rely on.

In terms of gas dynamics, the TYPE79E-3 is optimized for oxy-acetylene mixtures, though it can often be adapted for other fuel gases depending on the specific pressure settings and mixer configuration. The internal bore is swaged to ensure a laminar gas flow, producing a stable, defined inner cone and a protective outer envelope, essential for producing high-quality capillary brazing action and sound welds.