10462225 - Tweco S2462 Smoke Master Replacement MIG Nozzle 450A

Technical Specifications of the Tweco S2462 Smoke Master Nozzle

The Tweco S2462 is a standard replacement nozzle designed specifically for the Tweco Smoke Master series of air-cooled fume extraction MIG guns. Engineered to withstand high-amperage applications, this nozzle is rated for use up to 450 Amps, making it suitable for heavy industrial fabrication and structural welding where fume control is mandatory. The nozzle plays a critical role in the Smoke Master system, acting as the final conduit for shielding gas while accommodating the coaxial vacuum shroud that captures welding fumes at the source.

Manufactured to precise tolerances, the S2462 ensures concentricity between the contact tip and the nozzle bore, which is essential for stable arc performance and consistent gas flow. In fume extraction guns, the nozzle geometry is particularly important; it must allow sufficient shielding gas velocity to protect the weld pool while not interfering with the vacuum pressure required to pull fumes away from the welder's breathing zone. This standard nozzle variant offers a balanced profile suitable for most general access welding joints.

The component is identified by the internal SKU TWE1046-2225 and is constructed from high-grade copper alloy to resist spatter adhesion and thermal deformation during prolonged welding cycles. It is designed for air-cooled operation, relying on the ambient airflow and the suction of the fume extraction system to manage heat buildup. Proper maintenance and timely replacement of the nozzle are critical for maintaining the efficiency of the fume extraction system, as spatter buildup can disrupt airflow dynamics and reduce capture efficiency.