0458470883 - ESAB PSF 405/510W Replacement Straight Nozzle 19mm (2-Pack)

ESAB PSF Series Straight Gas Nozzle (19mm)

The ESAB PSF 405/510W Straight Nozzle is a premium replacement consumable designed for heavy-industrial MIG welding applications. Engineered with a 19mm bore diameter, this nozzle is specifically sized to provide a wide umbrella of shielding gas, making it ideal for high-amperage spray transfer modes or welding on materials that are sensitive to atmospheric contamination. The straight profile offers a consistent internal geometry that promotes laminar gas flow, reducing turbulence and the risk of porosity in the weld pool.

Manufactured from high-grade copper alloy, this nozzle is built to withstand the intense radiant heat generated by the PSF 405 (gas-cooled) and PSF 510W (water-cooled) torches. Its robust wall thickness helps dissipate heat effectively, prolonging the service life of the front-end consumables. The nozzle is designed to fit securely onto the torch neck, ensuring proper electrical isolation and concentricity with the contact tip. This package contains two (2) nozzles, providing welders with a backup for continuous operation in demanding production environments.

Regular inspection and replacement of the gas nozzle are critical for maintaining weld quality. Spatter buildup inside the nozzle can disrupt gas flow and cause short circuits; the smooth surface finish of this ESAB OEM part helps resist spatter adhesion, making it easier to clean during routine maintenance. Whether used in structural steel fabrication or heavy equipment manufacturing, this 19mm straight nozzle delivers the reliability expected from ESAB's PSF series components.