0339720001 - ESAB OPC Special Injector Mixer

Precision Gas Mixing for Industrial Cutting

The ESAB 0339720001 Ejector OPC Special is a critical internal component designed for specific ESAB oxy-fuel cutting torches. In injector-style torches, the ejector (or injector) serves as the heart of the gas mixing system. It utilizes the flow of high-pressure oxygen to create a venturi effect, which aspirates the low-pressure fuel gas into the mixing chamber. This precise interaction is essential for establishing a neutral, oxidizing, or carburizing flame depending on the operator's requirements. The "OPC" designation typically aligns with specific nozzle or torch series within the ESAB product line, often optimized for alternative fuel gases or specific cutting applications.

Manufactured to ESAB's exacting OEM standards, this ejector features highly tolerated internal machining. The concentricity and surface finish of the gas passages are strictly controlled to ensure laminar flow and efficient mixing. Any deviation in these dimensions—common in aftermarket copies—can lead to flow turbulence, reduced suction, and an unstable flame that fluctuates during operation. By using the genuine 0339720001 part, operators ensure that their equipment maintains the flow rates and safety margins intended by the original engineering design.

This component is constructed from high-quality brass, selected for its thermal conductivity and resistance to oxidation in high-oxygen environments. It is designed to withstand the thermal cycles inherent in heavy industrial cutting operations. Proper maintenance of the ejector is vital; over time, carbon buildup or mechanical wear can alter the flow characteristics. Replacing the ejector with this "Special" variant ensures that the torch performs according to its specific calibration, providing the reliability required for automated or manual cutting tasks.