0340009002 - ESAB PSF Series Gas Nozzle Retention Spring

Product Overview

The ESAB Cup Spring (SKU: 0340009002) is a specialized replacement component engineered for the maintenance and repair of ESAB PSF series MIG welding torches. This retention spring is critical for the mechanical stability of the gas nozzle assembly, providing the necessary radial tension to secure the nozzle onto the torch neck (swan neck). Manufactured from high-grade spring steel, the component is designed to withstand the repetitive thermal expansion and contraction cycles inherent in industrial welding environments without losing its elasticity or tensile strength.

Proper functioning of the cup spring is essential for operational safety and weld quality. A compromised spring can lead to loose gas nozzles, which may result in inconsistent shielding gas coverage, porosity in the weld pool, or the nozzle detaching completely during operation. This OEM part guarantees dimensional accuracy and compatibility with a wide range of ESAB PSF torches, including the PSF 250, PSF 305, PSF 405, and PSF 505 models. It serves as a direct replacement for worn or damaged springs, restoring the torch to factory specifications.

Installation of the 0340009002 Cup Spring is straightforward and requires no specialized tooling, allowing for rapid field repairs and minimal downtime. By maintaining a firm grip on the gas cup, the spring also facilitates the electrical isolation of the nozzle in certain configurations and ensures the nozzle remains concentric with the contact tip for optimal arc performance.