639965 - ESAB Purox Style Mixer #55 for W-300 Torch Handles

Precision Gas Mixing for Professional Fabrication

The ESAB Mixer #55 (SKU: 639965) is a critical component designed for the industrial-grade Purox W-300 oxy-fuel welding torch series. In the realm of gas welding and brazing, the mixer serves as the heart of the flame, combining oxygen and fuel gas at precise ratios before they enter the welding tip. This specific model, the #55, is engineered to handle the flow requirements of medium-to-heavy duty applications, ensuring that the resulting flame is stable, controllable, and free from the turbulence that can lead to poor weld quality or safety hazards.

Constructed from high-quality solid brass, the ESAB Mixer #55 offers superior thermal conductivity and resistance to deformation under high-heat conditions. The internal mixing chamber is machined to exacting tolerances, which promotes a laminar flow of gases. This is essential for achieving a neutral flame, which is the standard for most steel welding applications. The mixer features a double O-ring seal system that fits snugly into the torch handle, preventing dangerous gas leaks at the connection point. This design also allows for quick changeovers in the field without the need for excessive force or specialized tools.

For MRO professionals and procurement specialists, selecting the correct mixer is vital for maintaining the safety certification and operational efficiency of welding equipment. The ESAB 639965 is an OEM part, guaranteeing perfect compatibility with existing Purox W-300 setups. Unlike generic aftermarket replacements, this mixer maintains the manufacturer's specified flow rates and back-pressure resistance, reducing the risk of flashbacks and sustaining the longevity of the torch handle and tips.

Technical Specifications & Application

The Mixer #55 is versatile, supporting a range of welding heads and heating nozzles compatible with the W-300 platform. It is suitable for use with acetylene, hydrogen, and various other fuel gases when paired with the appropriate tips. Whether utilized in structural steel repair, pipe welding, or general maintenance, this mixer delivers the consistent performance required by skilled tradespeople.