14Z77 - Oxweld 1515-6 Propane/Natural Gas Cutting Tip | Size 6

Technical Overview of the Oxweld 1515-6 Cutting Tip (14Z77)

The Oxweld 1515-6 (SKU: 14Z77) is a high-performance cutting tip engineered specifically for use with alternative fuel gases, including Propane and Natural Gas. Manufactured by ESAB under the renowned Oxweld brand, this consumable is designed to meet the rigorous demands of industrial metal fabrication, scrap processing, and structural steel work. The 1515 series is characterized by its two-piece construction, consisting of a brass inner member with splined gas passages and a copper outer sleeve. This design is critical for alternative fuels, as it creates a recess at the tip end that anchors the flame, preventing blow-off even at high pressures and flow rates required for cutting thick sections.

The Size 6 configuration of the 14Z77 is calibrated for cutting mild steel plates with a thickness of approximately 4 inches (100mm). Achieving a clean cut on material of this magnitude using Propane or Natural Gas requires a significant preheat flame. The 1515-6 provides a medium-to-heavy preheat pattern, ensuring that the steel reaches its ignition temperature rapidly, reducing dwell time before the cutting oxygen stream is engaged. The internal geometry of the splines ensures turbulent mixing of the fuel gas and oxygen, maximizing the thermal efficiency of the flame (BTU transfer) despite the lower flame temperature of propane compared to acetylene.

Durability and maintenance are key advantages of the Oxweld 1515 series. The copper outer sleeve effectively dissipates heat, reducing the risk of tip overheating during prolonged cuts. Furthermore, the two-piece design allows for easier cleaning; the outer sleeve can be removed to access the splines of the inner member for soot removal, ensuring consistent gas flow and flame symmetry over the life of the product. This tip is fully compatible with standard Oxweld cutting torches, including the C-32, C-66, and C-97 series, making it a versatile addition to any industrial inventory utilizing piped natural gas or bulk propane.