CSGPNP4 - Victor Style GPN-4 Propane Cutting Tip Size 4

Technical Overview of the Victor Style GPN-P-4 Cutting Tip

The Victor Style GPN-P-4 is a specialized oxy-fuel cutting tip designed for use with alternative fuel gases, specifically Propane and Natural Gas. Unlike acetylene tips which are typically one-piece, this GPN series tip utilizes a two-piece construction consisting of a brass inner spline and a copper or chrome-plated outer shell. This design is critical for alternative fuels because propane and natural gas have different flame propagation rates and BTU outputs compared to acetylene. The two-piece configuration creates a recess at the tip end, which acts as a flame holder, ensuring a stable preheat flame even at the high flow rates required for heavy cutting.

This specific model is a Size 4, which is engineered for heavy-duty industrial applications. In the standard Victor sizing chart, a Size 4 tip is rated to cut mild steel ranging from approximately 3 inches (75mm) to 4 inches (100mm) in thickness. To achieve optimal performance, operators should adhere to recommended pressure settings, typically requiring an oxygen pressure between 45 and 55 PSI and a fuel gas pressure of roughly 5 to 10 PSI, depending on the specific torch length and hose configuration.

The exterior of the tip features a durable chrome plating. In technical applications, chrome plating serves a dual purpose: it reflects radiant heat from the workpiece, keeping the tip cooler during prolonged cuts, and it provides a smooth surface that resists the adhesion of molten spatter and slag. This reduces the frequency of cleaning required and prolongs the service life of the tip. The GPN-P-4 is fully compatible with Victor-style cutting attachments (such as the CA2460) and straight cutting torches (such as the ST series), making it a versatile component for mixed-fleet industrial environments.

Proper maintenance of the GPN-P-4 involves regular inspection of the seating surfaces and cleaning of the preheat splines. Because it is a two-piece tip, the inner member can be separated from the outer shell for thorough cleaning, ensuring that gas flow remains unobstructed and the flame pattern remains concentric.