K2389-6 - Lincoln EN 40 Stick Welding Fume Extraction Nozzle with Magnetic Stand

Optimized Fume Extraction for Stick Welding Applications

The Lincoln Electric EN 40 Extraction Nozzle (K2389-6) represents a specialized engineering solution for source capture fume extraction during Shielded Metal Arc Welding (SMAW). Unlike generic conical nozzles that require frequent repositioning to remain effective, the EN 40 is purpose-built to address the unique dynamics of stick welding. The unit features a distinctive L-shaped tube configuration culminating in an elongated slotted opening. This geometric design is calculated to coincide with the linear travel and burn-off rate of a standard stick electrode. By extending the capture zone along the weld joint, the nozzle maintains effective fume intake throughout the consumption of a single electrode, significantly reducing the need for the operator to pause and adjust the extraction equipment.

Technical Design and Integration

Integration into existing fume extraction systems is facilitated by the included hose-to-tube adapter, which is sized for 1-¾ inch (44.5 mm) inner diameter hoses. This standard sizing ensures compatibility with a broad range of Lincoln Electric mobile and stationary extraction units. The nozzle assembly is constructed to withstand the thermal and physical rigors of industrial welding environments. A key component of this kit is the magnetic mounting stand. This accessory provides a robust anchor point on ferromagnetic base materials, allowing the nozzle to be positioned securely in various orientations—whether flat, vertical, or overhead—without relying on friction or gravity alone. This stability is crucial for maintaining the optimal distance from the arc source, ensuring maximum capture velocity at the generation point of welding fumes.

Operational Efficiency and Safety

The primary advantage of the K2389-6 is the enhancement of operational efficiency combined with industrial hygiene compliance. By minimizing the interruptions required for equipment adjustment, welders can maintain a more consistent arc and travel speed, potentially improving weld quality. Simultaneously, the optimized capture zone ensures that particulate matter and gases are effectively removed from the welder's breathing zone, aiding facilities in meeting OSHA and other regulatory air quality standards. The unit weighs approximately 3.5 lbs, making it portable enough for mobile repair work while substantial enough to remain stable during operation.