0333-0404 - Victor 5-3-GPN Propane/Natural Gas Cutting Tip, Size 5

Technical Overview of the Victor 5-3-GPN Cutting Tip

The Victor 0333-0404, designated as the 5-3-GPN, is a high-performance cutting tip engineered specifically for use with alternative fuels such as Propane and Natural Gas. As a Size 5 consumable within the GPN Series, this tip is designed to handle substantial material thicknesses, specifically rated for cutting steel between 4 inches (101.6 mm) and 5 inches (127 mm). This capability places it firmly in the heavy-duty category, suitable for industrial fabrication, scrap processing, and structural steel demolition where deep penetration and consistent heat maintenance are required.

The 5-3-GPN utilizes a two-piece construction method, a standard requirement for efficient oxy-propane or oxy-natural gas cutting. Unlike single-piece acetylene tips, this design features a brass inner splined member and a heavy-wall copper outer shell. The splines create the preheat orifices, allowing the slower-burning fuel gas to mix thoroughly and anchor the flame effectively at the tip face. This ensures a stable, high-temperature preheat flame necessary to bring thick steel to its kindling temperature rapidly, even when using fuels with lower specific heat output than acetylene.

Operational specifications for the 0333-0404 are precise to ensure safety and cut quality. The tip requires a cutting oxygen pressure of 45-55 PSIG and a fuel gas pressure of 8-12 PSIG. When set correctly, operators can achieve cutting speeds ranging from 6 to 10 inches per minute. The tip produces a kerf width of approximately 0.14 inches, balancing material removal with cutting speed. It is fully compatible with Victor Series 3 hand torches and machine torches, making it a versatile addition to any professional oxy-fuel setup utilizing Victor 300 series handles or compatible equipment.

By optimizing gas flow and flame characteristics for propane and natural gas, the GPN series allows facilities to take advantage of these lower-cost fuels without sacrificing cut quality on heavy sections. The recessed tip end also provides a degree of protection against damage from molten slag blowback, extending the service life of the consumable in harsh environments.