UM43F - Uniweld UM43F Injector Mixer for Harris Style Handles (Propane/Natural Gas)

Uniweld UM43F Mixer Assembly for Alternative Fuels

The Uniweld UM43F is a specialized mixer assembly designed to facilitate the safe and efficient use of alternative fuel gases, such as Propane and Natural Gas, in oxy-fuel operations. Unlike standard equal-pressure mixers used for Acetylene, the UM43F features an "F-Type" injector design. This engineering utilizes the velocity of the high-pressure oxygen stream to create a venturi effect, effectively pulling the low-pressure fuel gas into the mixing chamber. This ensures a consistent, stable flame profile that is critical for high-quality heating and brazing applications.

Manufactured from high-grade brass, the UM43F is built to withstand the thermal stresses and physical demands of industrial environments. It is precision-machined to fit Uniweld 43 Series torch handles as well as compatible Harris-style 43-2 handles. This compatibility makes it a versatile component for workshops that utilize the Harris platform but require the specific performance characteristics of an injector mixer for cost-effective fuel gases. The assembly includes high-quality O-rings to ensure a gas-tight seal between the handle and the mixer, preventing hazardous leaks and maintaining system pressure integrity.

This mixer is the interface between the torch handle and the welding or heating tip. By optimizing the gas mixture ratio before it reaches the tip, the UM43F maximizes the thermal output of Propane or Natural Gas, making it an essential component for heavy-duty heating, flame straightening, and large-scale brazing projects where Acetylene may be cost-prohibitive or unavailable.