998170 - Victor Trimline Regulator Cap Assembly Bushing

Technical Overview of the ESAB 998170 Bushing

The ESAB 998170 is a specialized replacement bushing designed for the cap assembly of Trimline series regulators. As a critical component within the pressure adjustment mechanism, this bushing serves to guide the adjustment screw and reduce friction during the regulation of output pressure. Manufactured to precise OEM tolerances, it ensures that the regulator cap assembly maintains structural integrity and operational smoothness, which is vital for the accurate control of shielding gases or oxy-fuel mixtures.

In the context of gas regulation equipment, the cap assembly is subjected to mechanical stress every time the operator adjusts the pressure settings. Over time, the internal bushing can experience wear, leading to excessive play in the adjustment screw or increased resistance. Replacing the bushing with the ESAB 998170 restores the mechanical interface between the cap and the internal spring housing. This part is compatible with various models within the Victor/ESAB Trimline family, a series known for its compact design and reliability in medium-duty industrial applications.

Maintenance professionals and equipment technicians understand that using genuine parts is essential for compliance with safety standards. The 998170 bushing is fabricated from materials selected for their durability and resistance to deformation under load. By ensuring the correct alignment of the adjustment screw, this component prevents cross-threading and ensures that the pressure spring is compressed linearly, resulting in consistent gas flow rates. This part is supplied as a single unit and is intended for installation during a comprehensive regulator overhaul or cap assembly repair.

When servicing industrial gas regulators, it is important to inspect all components of the bonnet and cap assembly. If the original bushing shows signs of cracking, elongation, or abrasive wear, immediate replacement is recommended to prevent failure of the adjustment mechanism. The ESAB 998170 provides a direct-fit solution that eliminates the guesswork associated with aftermarket generic parts, ensuring that the regulator continues to perform within its rated specifications.