0387-0185 - Victor Size 2 GPN Propane Cutting Tip for 300 Series Torches

Technical Overview of the Victor 2-3-GPN-CS Cutting Tip

The Victor 0387-0185, designated as model 2-3-GPN-CS, is a specialized cutting tip engineered for use with alternative fuel gases such as propane and natural gas. Unlike standard acetylene tips, the GPN series utilizes a two-piece construction methodology. This assembly consists of a heavy-duty brass inner member with splined gas passages and a replaceable copper outer shell. This design is critical for alternative fuels, which have a lower flame propagation rate than acetylene; the recessed flame face and specific spline geometry create a stable anchor for the preheat flames, preventing blow-off during high-pressure oxygen injection.

This specific tip is a Size 2, which provides a cutting capacity range of approximately 1 inch (25mm) to 1.5 inches (38mm) of mild steel. It is part of the "3" series, indicating compatibility with Victor's heavy-duty 300 Series cutting attachments (such as the CA2460) and straight cutting torches (such as the CST 800). The flow characteristics are tuned to maximize the BTU output of propane/natural gas, ensuring rapid preheat times despite the lower flame temperature compared to acetylene.

Maintenance of the GPN tip is facilitated by its separable design. Operators can remove the outer copper sleeve to access and clean the inner splines, ensuring consistent gas flow and flame symmetry. The tip is packaged in a clamshell (CS) for protection during storage and shipping. Industrial users in scrap, demolition, and structural fabrication rely on the 3-GPN series for its efficiency and the cleaner cut face often associated with oxy-propane cutting.